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| The Deconstructed series is designed to visually and interactively deconstruct the internal code of JavaScript libraries, including jQuery, Prototype and MooTools. It breaks the physical JavaScript into visual blocks that you can easiliy navigate. Each block opens to reveal its internal code. Clickable hyperlinks allow you to follow program flow. Instructions: click element headers to view specific code. Click group headers to preview all nested descriptions. CTRL+click group headers to view all nested code. Click function names to view official API docs. | Key
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Object : jQuery
/*! * jQuery JavaScript Library v1.4.2 * http://jquery.com/ * * Copyright 2010, John Resig * Dual licensed under the MIT or GPL Version 2 licenses. * http://jquery.org/license * * Includes Sizzle.js * http://sizzlejs.com/ * Copyright 2010, The Dojo Foundation * Released under the MIT, BSD, and GPL Licenses. * * Date: Sat Feb 13 22:33:48 2010 -0500 */ (function( window, undefined ) { Section : jQuery Core
Properties : Framework parameters
// Define a local copy of jQuery var jQuery = function( selector, context ) { // The jQuery object is actually just the init constructor 'enhanced' return new jQuery.fn.init( selector, context ); }, // Map over jQuery in case of overwrite _jQuery = window.jQuery, // Map over the $ in case of overwrite _$ = window.$, // Use the correct document accordingly with window argument (sandbox) document = window.document, // A central reference to the root jQuery(document) rootjQuery, // A simple way to check for HTML strings or ID strings // (both of which we optimize for) quickExpr = /^[^<]*(<[\w\W]+>)[^>]*$|^#([\w-]+)$/, // Is it a simple selector isSimple = /^.[^:#\[\.,]*$/, // Check if a string has a non-whitespace character in it rnotwhite = /\S/, // Used for trimming whitespace rtrim = /^(\s|\u00A0)+|(\s|\u00A0)+$/g, // Match a standalone tag rsingleTag = /^<(\w+)\s*\/?>(?:<\/\1>)?$/, // Keep a UserAgent string for use with jQuery.browser userAgent = navigator.userAgent, // For matching the engine and version of the browser browserMatch, // Has the ready events already been bound? readyBound = false, // The functions to execute on DOM ready readyList = [], // The ready event handler DOMContentLoaded, // Save a reference to some core methods toString = Object.prototype.toString, hasOwnProperty = Object.prototype.hasOwnProperty, push = Array.prototype.push, slice = Array.prototype.slice, indexOf = Array.prototype.indexOf; Object : jQuery prototype
jQuery.fn = jQuery.prototype = { Function : init (jQuery)
Main jQuery function
init: function( selector, context ) { var match, elem, ret, doc; // Handle $(""), $(null), or $(undefined) if ( !selector ) { return this; } // Handle $(DOMElement) if ( selector.nodeType ) { this.context = this[0] = selector; this.length = 1; return this; } // The body element only exists once, optimize finding it if ( selector === "body" && !context ) { this.context = document; this[0] = document.body; this.selector = "body"; this.length = 1; return this; } // Handle HTML strings if ( typeof selector === "string" ) { // Are we dealing with HTML string or an ID? match = quickExpr.exec( selector ); // Verify a match, and that no context was specified for #id if ( match && (match[1] || !context) ) { // HANDLE: $(html) -> $(array) if ( match[1] ) { doc = (context ? context.ownerDocument || context : document); // If a single string is passed in and it's a single tag // just do a createElement and skip the rest ret = rsingleTag.exec( selector ); if ( ret ) { if ( jQuery.isPlainObject( context ) ) { selector = [ document.createElement( ret[1] ) ]; jQuery.fn.attr.call( selector, context, true ); } else { selector = [ doc.createElement( ret[1] ) ]; } } else { ret = buildFragment( [ match[1] ], [ doc ] ); selector = (ret.cacheable ? ret.fragment.cloneNode(true) : ret.fragment).childNodes; } return jQuery.merge( this, selector ); // HANDLE: $("#id") } else { elem = document.getElementById( match[2] ); if ( elem ) { // Handle the case where IE and Opera return items // by name instead of ID if ( elem.id !== match[2] ) { return rootjQuery.find( selector ); } // Otherwise, we inject the element directly into the jQuery object this.length = 1; this[0] = elem; } this.context = document; this.selector = selector; return this; } // HANDLE: $("TAG") } else if ( !context && /^\w+$/.test( selector ) ) { this.selector = selector; this.context = document; selector = document.getElementsByTagName( selector ); return jQuery.merge( this, selector ); // HANDLE: $(expr, $(...)) } else if ( !context || context.jquery ) { return (context || rootjQuery).find( selector ); // HANDLE: $(expr, context) // (which is just equivalent to: $(context).find(expr) } else { return jQuery( context ).find( selector ); } // HANDLE: $(function) // Shortcut for document ready } else if ( jQuery.isFunction( selector ) ) { return rootjQuery.ready( selector ); } if (selector.selector !== undefined) { this.selector = selector.selector; this.context = selector.context; } return jQuery.makeArray( selector, this ); }, Properties : internal
// Start with an empty selector selector: "", // The current version of jQuery being used jquery: "1.4.2", // The default length of a jQuery object is 0 length: 0,
Function : size
Return the number of DOM elements matched by the jQuery object
// The number of elements contained in the matched element set size: function() { return this.length; }, Function : toArray
Retrieve all the DOM elements contained in the jQuery set, as an array
toArray: function() { return slice.call( this, 0 ); }, Function : get
Retrieve the DOM elements matched by the jQuery object
// Get the Nth element in the matched element set OR // Get the whole matched element set as a clean array get: function( num ) { return num == null ? // Return a 'clean' array this.toArray() : // Return just the object ( num < 0 ? this.slice(num)[ 0 ] : this[ num ] ); }, Function : pushStack
Add a collection of DOM elements onto the jQuery stack
// Take an array of elements and push it onto the stack // (returning the new matched element set) pushStack: function( elems, name, selector ) { // Build a new jQuery matched element set var ret = jQuery(); if ( jQuery.isArray( elems ) ) { push.apply( ret, elems ); } else { jQuery.merge( ret, elems ); } // Add the old object onto the stack (as a reference) ret.prevObject = this; ret.context = this.context; if ( name === "find" ) { ret.selector = this.selector + (this.selector ? " " : "") + selector; } else if ( name ) { ret.selector = this.selector + "." + name + "(" + selector + ")"; } // Return the newly-formed element set return ret; }, Function : each
Iterate over a jQuery object, executing a function for each matched element
// Execute a callback for every element in the matched set. // (You can seed the arguments with an array of args, but this is // only used internally.) each: function( callback, args ) { return jQuery.each( this, callback, args ); }, Function : ready
Specify a function to execute when the DOM is fully loaded
ready: function( fn ) { // Attach the listeners jQuery.bindReady(); // If the DOM is already ready if ( jQuery.isReady ) { // Execute the function immediately fn.call( document, jQuery ); // Otherwise, remember the function for later } else if ( readyList ) { // Add the function to the wait list readyList.push( fn ); } return this; }, Function : eq
Reduce the set of matched elements to the one at the specified index
eq: function( i ) { return i === -1 ? this.slice( i ) : this.slice( i, +i + 1 ); }, Function : first
Reduce the set of matched elements to the first in the set
first: function() { return this.eq( 0 ); }, Function : last
Reduce the set of matched elements to the final one in the set
last: function() { return this.eq( -1 ); }, Function : slice
Reduce the set of matched elements to a subset specified by a range of indices
slice: function() { return this.pushStack( slice.apply( this, arguments ), "slice", slice.call(arguments).join(",") ); }, Function : map
Pass each element in the current matched set through a function, producing a new jQuery object containing the return values
map: function( callback ) { return this.pushStack( jQuery.map(this, function( elem, i ) { return callback.call( elem, i, elem ); })); }, Function : end
End the most recent filtering operation in the current chain and return the set of matched elements to its previous state
end: function() { return this.prevObject || jQuery(null); }, Properties : shortcuts to prototype methods
// For internal use only. // Behaves like an Array's method, not like a jQuery method. push: push, sort: [].sort, splice: [].splice
};
Code : Give the init function the jQuery prototype for later instantiation
// Give the init function the jQuery prototype for later instantiation jQuery.fn.init.prototype = jQuery.fn;
Section : Utilities
Function : extend
Merge the contents of two or more objects together into the first object
jQuery.extend = jQuery.fn.extend = function() { // copy reference to target object var target = arguments[0] || {}, i = 1, length = arguments.length, deep = false, options, name, src, copy; // Handle a deep copy situation if ( typeof target === "boolean" ) { deep = target; target = arguments[1] || {}; // skip the boolean and the target i = 2; } // Handle case when target is a string or something (possible in deep copy) if ( typeof target !== "object" && !jQuery.isFunction(target) ) { target = {}; } // extend jQuery itself if only one argument is passed if ( length === i ) { target = this; --i; } for ( ; i < length; i++ ) { // Only deal with non-null/undefined values if ( (options = arguments[ i ]) != null ) { // Extend the base object for ( name in options ) { src = target[ name ]; copy = options[ name ]; // Prevent never-ending loop if ( target === copy ) { continue; } // Recurse if we're merging object literal values or arrays if ( deep && copy && ( jQuery.isPlainObject(copy) || jQuery.isArray(copy) ) ) { var clone = src && ( jQuery.isPlainObject(src) || jQuery.isArray(src) ) ? src : jQuery.isArray(copy) ? [] : {}; // Never move original objects, clone them target[ name ] = jQuery.extend( deep, clone, copy ); // Don't bring in undefined values } else if ( copy !== undefined ) { target[ name ] = copy; } } } } // Return the modified object return target; }; Extend : Add utility methods
jQuery.extend({ Function : noConflict
Relinquish jQuery's control of the $ variable
noConflict: function( deep ) { window.$ = _$; if ( deep ) { window.jQuery = _jQuery; } return jQuery; }, Properties : isReady
// Is the DOM ready to be used? Set to true once it occurs. isReady: false,
Function : ready
Specify a function to execute when the DOM is fully loaded
// Handle when the DOM is ready ready: function() { // Make sure that the DOM is not already loaded if ( !jQuery.isReady ) { // Make sure body exists, at least, in case IE gets a little overzealous (ticket #5443). if ( !document.body ) { return setTimeout( jQuery.ready, 13 ); } // Remember that the DOM is ready jQuery.isReady = true; // If there are functions bound, to execute if ( readyList ) { // Execute all of them var fn, i = 0; while ( (fn = readyList[ i++ ]) ) { fn.call( document, jQuery ); } // Reset the list of functions readyList = null; } // Trigger any bound ready events if ( jQuery.fn.triggerHandler ) { jQuery( document ).triggerHandler( "ready" ); } } }, Function : bindReady
Description
bindReady: function() { if ( readyBound ) { return; } readyBound = true; // Catch cases where $(document).ready() is called after the // browser event has already occurred. if ( document.readyState === "complete" ) { return jQuery.ready(); } // Mozilla, Opera and webkit nightlies currently support this event if ( document.addEventListener ) { // Use the handy event callback document.addEventListener( "DOMContentLoaded", DOMContentLoaded, false ); // A fallback to window.onload, that will always work window.addEventListener( "load", jQuery.ready, false ); // If IE event model is used } else if ( document.attachEvent ) { // ensure firing before onload, // maybe late but safe also for iframes document.attachEvent("onreadystatechange", DOMContentLoaded); // A fallback to window.onload, that will always work window.attachEvent( "onload", jQuery.ready ); // If IE and not a frame // continually check to see if the document is ready var toplevel = false; try { toplevel = window.frameElement == null; } catch(e) {} if ( document.documentElement.doScroll && toplevel ) { doScrollCheck(); } } }, Function : isFunction
Determine if the argument passed is a Javascript function object
// See test/unit/core.js for details concerning isFunction. // Since version 1.3, DOM methods and functions like alert // aren't supported. They return false on IE (#2968). isFunction: function( obj ) { return toString.call(obj) === "[object Function]"; }, Function : isArray
Determine whether the argument is an array
isArray: function( obj ) { return toString.call(obj) === "[object Array]"; }, Function : isPlainObject
Check to see if an object is a plain object (created using "{}" or "new Object")
isPlainObject: function( obj ) { // Must be an Object. // Because of IE, we also have to check the presence of the constructor property. // Make sure that DOM nodes and window objects don't pass through, as well if ( !obj || toString.call(obj) !== "[object Object]" || obj.nodeType || obj.setInterval ) { return false; } // Not own constructor property must be Object if ( obj.constructor && !hasOwnProperty.call(obj, "constructor") && !hasOwnProperty.call(obj.constructor.prototype, "isPrototypeOf") ) { return false; } // Own properties are enumerated firstly, so to speed up, // if last one is own, then all properties are own. var key; for ( key in obj ) {} return key === undefined || hasOwnProperty.call( obj, key ); }, Function : isEmptyObject
Check to see if an object is empty (contains no properties)
isEmptyObject: function( obj ) { for ( var name in obj ) { return false; } return true; }, Function : error
Takes a string and throws an exception containing it
error: function( msg ) { throw msg; }, Function : parseJSON
Takes a well-formed JSON string and returns the resulting JavaScript object
parseJSON: function( data ) { if ( typeof data !== "string" || !data ) { return null; } // Make sure leading/trailing whitespace is removed (IE can't handle it) data = jQuery.trim( data ); // Make sure the incoming data is actual JSON // Logic borrowed from http://json.org/json2.js if ( /^[\],:{}\s]*$/.test(data.replace(/\\(?:["\\\/bfnrt]|u[0-9a-fA-F]{4})/g, "@") .replace(/"[^"\\\n\r]*"|true|false|null|-?\d+(?:\.\d*)?(?:[eE][+\-]?\d+)?/g, "]") .replace(/(?:^|:|,)(?:\s*\[)+/g, "")) ) { // Try to use the native JSON parser first return window.JSON && window.JSON.parse ? window.JSON.parse( data ) : (new Function("return " + data))(); } else { jQuery.error( "Invalid JSON: " + data ); } }, Function : globalEval
Execute some JavaScript code globally
// Evalulates a script in a global context globalEval: function( data ) { if ( data && rnotwhite.test(data) ) { // Inspired by code by Andrea Giammarchi // http://webreflection.blogspot.com/2007/08/global-scope-evaluation-and-dom.html var head = document.getElementsByTagName("head")[0] || document.documentElement, script = document.createElement("script"); script.type = "text/javascript"; if ( jQuery.support.scriptEval ) { script.appendChild( document.createTextNode( data ) ); } else { script.text = data; } // Use insertBefore instead of appendChild to circumvent an IE6 bug. // This arises when a base node is used (#2709). head.insertBefore( script, head.firstChild ); head.removeChild( script ); } }, Function : nodeName
Returns the uppercase node name
nodeName: function( elem, name ) { return elem.nodeName && elem.nodeName.toUpperCase() === name.toUpperCase(); }, Function : each
Iterate over a jQuery object, executing a function for each matched element
// args is for internal usage only each: function( object, callback, args ) { var name, i = 0, length = object.length, isObj = length === undefined || jQuery.isFunction(object); if ( args ) { if ( isObj ) { for ( name in object ) { if ( callback.apply( object[ name ], args ) === false ) { break; } } } else { for ( ; i < length; ) { if ( callback.apply( object[ i++ ], args ) === false ) { break; } } } // A special, fast, case for the most common use of each } else { if ( isObj ) { for ( name in object ) { if ( callback.call( object[ name ], name, object[ name ] ) === false ) { break; } } } else { for ( var value = object[0]; i < length && callback.call( value, i, value ) !== false; value = object[++i] ) {} } } return object; }, Function : trim
Remove the whitespace from the beginning and end of a string
trim: function( text ) { return (text || "").replace( rtrim, "" ); }, Function : makeArray
Convert an array-like object into a true JavaScript array
// results is for internal usage only makeArray: function( array, results ) { var ret = results || []; if ( array != null ) { // The window, strings (and functions) also have 'length' // The extra typeof function check is to prevent crashes // in Safari 2 (See: #3039) if ( array.length == null || typeof array === "string" || jQuery.isFunction(array) || (typeof array !== "function" && array.setInterval) ) { push.call( ret, array ); } else { jQuery.merge( ret, array ); } } return ret; }, Function : inArray
Search for a specified value within an array and return its index (or -1 if not found)
inArray: function( elem, array ) { if ( array.indexOf ) { return array.indexOf( elem ); } for ( var i = 0, length = array.length; i < length; i++ ) { if ( array[ i ] === elem ) { return i; } } return -1; }, Function : merge
Merge the contents of two arrays together into the first array
merge: function( first, second ) { var i = first.length, j = 0; if ( typeof second.length === "number" ) { for ( var l = second.length; j < l; j++ ) { first[ i++ ] = second[ j ]; } } else { while ( second[j] !== undefined ) { first[ i++ ] = second[ j++ ]; } } first.length = i; return first; }, Function : grep
Finds the elements of an array which satisfy a filter function. The original array is not affected
grep: function( elems, callback, inv ) { var ret = []; // Go through the array, only saving the items // that pass the validator function for ( var i = 0, length = elems.length; i < length; i++ ) { if ( !inv !== !callback( elems[ i ], i ) ) { ret.push( elems[ i ] ); } } return ret; }, Function : map
Translate all items in an array or array-like object to another array of items
// arg is for internal usage only map: function( elems, callback, arg ) { var ret = [], value; // Go through the array, translating each of the items to their // new value (or values). for ( var i = 0, length = elems.length; i < length; i++ ) { value = callback( elems[ i ], i, arg ); if ( value != null ) { ret[ ret.length ] = value; } } return ret.concat.apply( [], ret ); }, Properties : guid
// A global GUID counter for objects guid: 1,
Function : proxy
Takes a function and returns a new one that will always have a particular context
proxy: function( fn, proxy, thisObject ) { if ( arguments.length === 2 ) { if ( typeof proxy === "string" ) { thisObject = fn; fn = thisObject[ proxy ]; proxy = undefined; } else if ( proxy && !jQuery.isFunction( proxy ) ) { thisObject = proxy; proxy = undefined; } } if ( !proxy && fn ) { proxy = function() { return fn.apply( thisObject || this, arguments ); }; } // Set the guid of unique handler to the same of original handler, so it can be removed if ( fn ) { proxy.guid = fn.guid = fn.guid || proxy.guid || jQuery.guid++; } // So proxy can be declared as an argument return proxy; }, Function : uaMatch
// Use of jQuery.browser is frowned upon. // More details: http://docs.jquery.com/Utilities/jQuery.browser uaMatch: function( ua ) { ua = ua.toLowerCase(); var match = /(webkit)[ \/]([\w.]+)/.exec( ua ) || /(opera)(?:.*version)?[ \/]([\w.]+)/.exec( ua ) || /(msie) ([\w.]+)/.exec( ua ) || !/compatible/.test( ua ) && /(mozilla)(?:.*? rv:([\w.]+))?/.exec( ua ) || []; return { browser: match[1] || "", version: match[2] || "0" }; }, Properties : browser
browser: {} });
Code : Browser / DOM setup code
browserMatch = jQuery.uaMatch( userAgent ); if ( browserMatch.browser ) { jQuery.browser[ browserMatch.browser ] = true; jQuery.browser.version = browserMatch.version; } // Deprecated, use jQuery.browser.webkit instead if ( jQuery.browser.webkit ) { jQuery.browser.safari = true; } if ( indexOf ) { jQuery.inArray = function( elem, array ) { return indexOf.call( array, elem ); }; } // All jQuery objects should point back to these rootjQuery = jQuery(document); // Cleanup functions for the document ready method if ( document.addEventListener ) { DOMContentLoaded = function() { document.removeEventListener( "DOMContentLoaded", DOMContentLoaded, false ); jQuery.ready(); }; } else if ( document.attachEvent ) { DOMContentLoaded = function() { // Make sure body exists, at least, in case IE gets a little overzealous (ticket #5443). if ( document.readyState === "complete" ) { document.detachEvent( "onreadystatechange", DOMContentLoaded ); jQuery.ready(); } }; } Function : doScrollCheck
Internal function
// The DOM ready check for Internet Explorer function doScrollCheck() { if ( jQuery.isReady ) { return; } try { // If IE is used, use the trick by Diego Perini // http://javascript.nwbox.com/IEContentLoaded/ document.documentElement.doScroll("left"); } catch( error ) { setTimeout( doScrollCheck, 1 ); return; } // and execute any waiting functions jQuery.ready(); } Function : evalScript
Internal function
function evalScript( i, elem ) { if ( elem.src ) { jQuery.ajax({ url: elem.src, async: false, dataType: "script" }); } else { jQuery.globalEval( elem.text || elem.textContent || elem.innerHTML || "" ); } if ( elem.parentNode ) { elem.parentNode.removeChild( elem ); } } Function : access
Mutifunctional method to get and set values to a collection
// Mutifunctional method to get and set values to a collection // The value/s can be optionally by executed if its a function function access( elems, key, value, exec, fn, pass ) { var length = elems.length; // Setting many attributes if ( typeof key === "object" ) { for ( var k in key ) { access( elems, k, key[k], exec, fn, value ); } return elems; } // Setting one attribute if ( value !== undefined ) { // Optionally, function values get executed if exec is true exec = !pass && exec && jQuery.isFunction(value); for ( var i = 0; i < length; i++ ) { fn( elems[i], key, exec ? value.call( elems[i], i, fn( elems[i], key ) ) : value, pass ); } return elems; } // Getting an attribute return length ? fn( elems[0], key ) : undefined; } Code : jQuery browser support
(function() { jQuery.support = {}; var root = document.documentElement, script = document.createElement("script"), div = document.createElement("div"), id = "script" + now(); div.style.display = "none"; div.innerHTML = " <link/><table></table><a href='/a' style='color:red;float:left;opacity:.55;'>a</a><input type='checkbox'/>"; var all = div.getElementsByTagName("*"), a = div.getElementsByTagName("a")[0]; // Can't get basic test support if ( !all || !all.length || !a ) { return; } jQuery.support = { // IE strips leading whitespace when .innerHTML is used leadingWhitespace: div.firstChild.nodeType === 3, // Make sure that tbody elements aren't automatically inserted // IE will insert them into empty tables tbody: !div.getElementsByTagName("tbody").length, // Make sure that link elements get serialized correctly by innerHTML // This requires a wrapper element in IE htmlSerialize: !!div.getElementsByTagName("link").length, // Get the style information from getAttribute // (IE uses .cssText insted) style: /red/.test( a.getAttribute("style") ), // Make sure that URLs aren't manipulated // (IE normalizes it by default) hrefNormalized: a.getAttribute("href") === "/a", // Make sure that element opacity exists // (IE uses filter instead) // Use a regex to work around a WebKit issue. See #5145 opacity: /^0.55$/.test( a.style.opacity ), // Verify style float existence // (IE uses styleFloat instead of cssFloat) cssFloat: !!a.style.cssFloat, // Make sure that if no value is specified for a checkbox // that it defaults to "on". // (WebKit defaults to "" instead) checkOn: div.getElementsByTagName("input")[0].value === "on", // Make sure that a selected-by-default option has a working selected property. // (WebKit defaults to false instead of true, IE too, if it's in an optgroup) optSelected: document.createElement("select").appendChild( document.createElement("option") ).selected, parentNode: div.removeChild( div.appendChild( document.createElement("div") ) ).parentNode === null, // Will be defined later deleteExpando: true, checkClone: false, scriptEval: false, noCloneEvent: true, boxModel: null }; script.type = "text/javascript"; try { script.appendChild( document.createTextNode( "window." + id + "=1;" ) ); } catch(e) {} root.insertBefore( script, root.firstChild ); // Make sure that the execution of code works by injecting a script // tag with appendChild/createTextNode // (IE doesn't support this, fails, and uses .text instead) if ( window[ id ] ) { jQuery.support.scriptEval = true; delete window[ id ]; } // Test to see if it's possible to delete an expando from an element // Fails in Internet Explorer try { delete script.test; } catch(e) { jQuery.support.deleteExpando = false; } root.removeChild( script ); if ( div.attachEvent && div.fireEvent ) { div.attachEvent("onclick", function click() { // Cloning a node shouldn't copy over any // bound event handlers (IE does this) jQuery.support.noCloneEvent = false; div.detachEvent("onclick", click); }); div.cloneNode(true).fireEvent("onclick"); } div = document.createElement("div"); div.innerHTML = "<input type='radio' name='radiotest' checked='checked'/>"; var fragment = document.createDocumentFragment(); fragment.appendChild( div.firstChild ); // WebKit doesn't clone checked state correctly in fragments jQuery.support.checkClone = fragment.cloneNode(true).cloneNode(true).lastChild.checked; // Figure out if the W3C box model works as expected // document.body must exist before we can do this jQuery(function() { var div = document.createElement("div"); div.style.width = div.style.paddingLeft = "1px"; document.body.appendChild( div ); jQuery.boxModel = jQuery.support.boxModel = div.offsetWidth === 2; document.body.removeChild( div ).style.display = 'none'; div = null; }); // Technique from Juriy Zaytsev // http://thinkweb2.com/projects/prototype/detecting-event-support-without-browser-sniffing/ var eventSupported = function( eventName ) { var el = document.createElement("div"); eventName = "on" + eventName; var isSupported = (eventName in el); if ( !isSupported ) { el.setAttribute(eventName, "return;"); isSupported = typeof el[eventName] === "function"; } el = null; return isSupported; }; jQuery.support.submitBubbles = eventSupported("submit"); jQuery.support.changeBubbles = eventSupported("change"); // release memory in IE root = script = div = all = a = null; })(); Section : Data
Object : attribute names
jQuery.props = { "for": "htmlFor", "class": "className", readonly: "readOnly", maxlength: "maxLength", cellspacing: "cellSpacing", rowspan: "rowSpan", colspan: "colSpan", tabindex: "tabIndex", usemap: "useMap", frameborder: "frameBorder" }; Properties : misc variables
var expando = "jQuery" + now(), uuid = 0, windowData = {}; Extend : data
jQuery.extend({ Properties : cache & expando
cache: {}, expando:expando, // The following elements throw uncatchable exceptions if you // attempt to add expando properties to them. noData: { "embed": true, "object": true, "applet": true }, Function : data
Store arbitrary data associated with the matched elements
data: function( elem, name, data ) { if ( elem.nodeName && jQuery.noData[elem.nodeName.toLowerCase()] ) { return; } elem = elem == window ? windowData : elem; var id = elem[ expando ], cache = jQuery.cache, thisCache; if ( !id && typeof name === "string" && data === undefined ) { return null; } // Compute a unique ID for the element if ( !id ) { id = ++uuid; } // Avoid generating a new cache unless none exists and we // want to manipulate it. if ( typeof name === "object" ) { elem[ expando ] = id; thisCache = cache[ id ] = jQuery.extend(true, {}, name); } else if ( !cache[ id ] ) { elem[ expando ] = id; cache[ id ] = {}; } thisCache = cache[ id ]; // Prevent overriding the named cache with undefined values if ( data !== undefined ) { thisCache[ name ] = data; } return typeof name === "string" ? thisCache[ name ] : thisCache; }, Function : removeData
Remove a previously-stored piece of data
removeData: function( elem, name ) { if ( elem.nodeName && jQuery.noData[elem.nodeName.toLowerCase()] ) { return; } elem = elem == window ? windowData : elem; var id = elem[ expando ], cache = jQuery.cache, thisCache = cache[ id ]; // If we want to remove a specific section of the element's data if ( name ) { if ( thisCache ) { // Remove the section of cache data delete thisCache[ name ]; // If we've removed all the data, remove the element's cache if ( jQuery.isEmptyObject(thisCache) ) { jQuery.removeData( elem ); } } // Otherwise, we want to remove all of the element's data } else { if ( jQuery.support.deleteExpando ) { delete elem[ jQuery.expando ]; } else if ( elem.removeAttribute ) { elem.removeAttribute( jQuery.expando ); } // Completely remove the data cache delete cache[ id ]; } } });
Extend : data (jQuery.fn)
jQuery.fn.extend({ Function : data
Store arbitrary data associated with the matched elements
data: function( key, value ) { if ( typeof key === "undefined" && this.length ) { return jQuery.data( this[0] ); } else if ( typeof key === "object" ) { return this.each(function() { jQuery.data( this, key ); }); } var parts = key.split("."); parts[1] = parts[1] ? "." + parts[1] : ""; if ( value === undefined ) { var data = this.triggerHandler("getData" + parts[1] + "!", [parts[0]]); if ( data === undefined && this.length ) { data = jQuery.data( this[0], key ); } return data === undefined && parts[1] ? this.data( parts[0] ) : data; } else { return this.trigger("setData" + parts[1] + "!", [parts[0], value]).each(function() { jQuery.data( this, key, value ); }); } }, Function : removeData
Remove a previously-stored piece of data
removeData: function( key ) { return this.each(function() { jQuery.removeData( this, key ); }); } });
Extend : Queing
jQuery.extend({ Function : queue
Show the queue of functions to be executed on the matched elements
queue: function( elem, type, data ) { if ( !elem ) { return; } type = (type || "fx") + "queue"; var q = jQuery.data( elem, type ); // Speed up dequeue by getting out quickly if this is just a lookup if ( !data ) { return q || []; } if ( !q || jQuery.isArray(data) ) { q = jQuery.data( elem, type, jQuery.makeArray(data) ); } else { q.push( data ); } return q; }, Function : dequeue
Execute the next function on the queue for the matched element
dequeue: function( elem, type ) { type = type || "fx"; var queue = jQuery.queue( elem, type ), fn = queue.shift(); // If the fx queue is dequeued, always remove the progress sentinel if ( fn === "inprogress" ) { fn = queue.shift(); } if ( fn ) { // Add a progress sentinel to prevent the fx queue from being // automatically dequeued if ( type === "fx" ) { queue.unshift("inprogress"); } fn.call(elem, function() { jQuery.dequeue(elem, type); }); } } });
Extend : Queing (jQuery.fn)
jQuery.fn.extend({ Function : queue
Show the queue of functions to be executed on the matched elements
queue: function( type, data ) { if ( typeof type !== "string" ) { data = type; type = "fx"; } if ( data === undefined ) { return jQuery.queue( this[0], type ); } return this.each(function( i, elem ) { var queue = jQuery.queue( this, type, data ); if ( type === "fx" && queue[0] !== "inprogress" ) { jQuery.dequeue( this, type ); } }); }, Function : dequeue
Execute the next function on the queue for the matched element
dequeue: function( type ) { return this.each(function() { jQuery.dequeue( this, type ); }); }, Function : delay
Set a timer to delay execution of subsequent items in the queue
// Based off of the plugin by Clint Helfers, with permission. // http://blindsignals.com/index.php/2009/07/jquery-delay/ delay: function( time, type ) { time = jQuery.fx ? jQuery.fx.speeds[time] || time : time; type = type || "fx"; return this.queue( type, function() { var elem = this; setTimeout(function() { jQuery.dequeue( elem, type ); }, time ); }); }, Function : clearQueue
Remove from the queue all items that have not yet been run.
clearQueue: function( type ) { return this.queue( type || "fx", [] ); } });
Section : Attributes
Properties : Regular expressions
var rclass = /[\n\t]/g, rspace = /\s+/, rreturn = /\r/g, rspecialurl = /href|src|style/, rtype = /(button|input)/i, rfocusable = /(button|input|object|select|textarea)/i, rclickable = /^(a|area)$/i, rradiocheck = /radio|checkbox/;
Extend : Attributes and classes
jQuery.fn.extend({ Function : attr
Get the value of an attribute for the first element in the set of matched elements
attr: function( name, value ) { return access( this, name, value, true, jQuery.attr ); }, Function : removeAttr
Remove an attribute from each element in the set of matched elements
removeAttr: function( name, fn ) { return this.each(function(){ jQuery.attr( this, name, "" ); if ( this.nodeType === 1 ) { this.removeAttribute( name ); } }); }, Function : addClass
Adds the specified class(es) to each of the set of matched elements
addClass: function( value ) { if ( jQuery.isFunction(value) ) { return this.each(function(i) { var self = jQuery(this); self.addClass( value.call(this, i, self.attr("class")) ); }); } if ( value && typeof value === "string" ) { var classNames = (value || "").split( rspace ); for ( var i = 0, l = this.length; i < l; i++ ) { var elem = this[i]; if ( elem.nodeType === 1 ) { if ( !elem.className ) { elem.className = value; } else { var className = " " + elem.className + " ", setClass = elem.className; for ( var c = 0, cl = classNames.length; c < cl; c++ ) { if ( className.indexOf( " " + classNames[c] + " " ) < 0 ) { setClass += " " + classNames[c]; } } elem.className = jQuery.trim( setClass ); } } } } return this; }, Function : removeClass
Remove a single class, multiple classes, or all classes from each element in the set of matched elements
removeClass: function( value ) { if ( jQuery.isFunction(value) ) { return this.each(function(i) { var self = jQuery(this); self.removeClass( value.call(this, i, self.attr("class")) ); }); } if ( (value && typeof value === "string") || value === undefined ) { var classNames = (value || "").split(rspace); for ( var i = 0, l = this.length; i < l; i++ ) { var elem = this[i]; if ( elem.nodeType === 1 && elem.className ) { if ( value ) { var className = (" " + elem.className + " ").replace(rclass, " "); for ( var c = 0, cl = classNames.length; c < cl; c++ ) { className = className.replace(" " + classNames[c] + " ", " "); } elem.className = jQuery.trim( className ); } else { elem.className = ""; } } } } return this; }, Function : toggleClass
Add or remove one or more classes from each element in the set of matched elements, depending on either the class's presence or the value of the switch argument
toggleClass: function( value, stateVal ) { var type = typeof value, isBool = typeof stateVal === "boolean"; if ( jQuery.isFunction( value ) ) { return this.each(function(i) { var self = jQuery(this); self.toggleClass( value.call(this, i, self.attr("class"), stateVal), stateVal ); }); } return this.each(function() { if ( type === "string" ) { // toggle individual class names var className, i = 0, self = jQuery(this), state = stateVal, classNames = value.split( rspace ); while ( (className = classNames[ i++ ]) ) { // check each className given, space seperated list state = isBool ? state : !self.hasClass( className ); self[ state ? "addClass" : "removeClass" ]( className ); } } else if ( type === "undefined" || type === "boolean" ) { if ( this.className ) { // store className if set jQuery.data( this, "__className__", this.className ); } // toggle whole className this.className = this.className || value === false ? "" : jQuery.data( this, "__className__" ) || ""; } }); }, Function : hasClass
Determine whether any of the matched elements are assigned the given class
hasClass: function( selector ) { var className = " " + selector + " "; for ( var i = 0, l = this.length; i < l; i++ ) { if ( (" " + this[i].className + " ").replace(rclass, " ").indexOf( className ) > -1 ) { return true; } } return false; }, Function : val
Get the current value of the first element in the set of matched elements
val: function( value ) { if ( value === undefined ) { var elem = this[0]; if ( elem ) { if ( jQuery.nodeName( elem, "option" ) ) { return (elem.attributes.value || {}).specified ? elem.value : elem.text; } // We need to handle select boxes special if ( jQuery.nodeName( elem, "select" ) ) { var index = elem.selectedIndex, values = [], options = elem.options, one = elem.type === "select-one"; // Nothing was selected if ( index < 0 ) { return null; } // Loop through all the selected options for ( var i = one ? index : 0, max = one ? index + 1 : options.length; i < max; i++ ) { var option = options[ i ]; if ( option.selected ) { // Get the specifc value for the option value = jQuery(option).val(); // We don't need an array for one selects if ( one ) { return value; } // Multi-Selects return an array values.push( value ); } } return values; } // Handle the case where in Webkit "" is returned instead of "on" if a value isn't specified if ( rradiocheck.test( elem.type ) && !jQuery.support.checkOn ) { return elem.getAttribute("value") === null ? "on" : elem.value; } // Everything else, we just grab the value return (elem.value || "").replace(rreturn, ""); } return undefined; } var isFunction = jQuery.isFunction(value); return this.each(function(i) { var self = jQuery(this), val = value; if ( this.nodeType !== 1 ) { return; } if ( isFunction ) { val = value.call(this, i, self.val()); } // Typecast each time if the value is a Function and the appended // value is therefore different each time. if ( typeof val === "number" ) { val += ""; } if ( jQuery.isArray(val) && rradiocheck.test( this.type ) ) { this.checked = jQuery.inArray( self.val(), val ) >= 0; } else if ( jQuery.nodeName( this, "select" ) ) { var values = jQuery.makeArray(val); jQuery( "option", this ).each(function() { this.selected = jQuery.inArray( jQuery(this).val(), values ) >= 0; }); if ( !values.length ) { this.selectedIndex = -1; } } else { this.value = val; } }); } });
Extend : Attribute functions
jQuery.extend({ Object : attributes hash
attrFn: { val: true, css: true, html: true, text: true, data: true, width: true, height: true, offset: true }, Function : attr
Get the value of an attribute for the first element in the set of matched elements
attr: function( elem, name, value, pass ) { // don't set attributes on text and comment nodes if ( !elem || elem.nodeType === 3 || elem.nodeType === 8 ) { return undefined; } if ( pass && name in jQuery.attrFn ) { return jQuery(elem)[name](value); } var notxml = elem.nodeType !== 1 || !jQuery.isXMLDoc( elem ), // Whether we are setting (or getting) set = value !== undefined; // Try to normalize/fix the name name = notxml && jQuery.props[ name ] || name; // Only do all the following if this is a node (faster for style) if ( elem.nodeType === 1 ) { // These attributes require special treatment var special = rspecialurl.test( name ); // Safari mis-reports the default selected property of an option // Accessing the parent's selectedIndex property fixes it if ( name === "selected" && !jQuery.support.optSelected ) { var parent = elem.parentNode; if ( parent ) { parent.selectedIndex; // Make sure that it also works with optgroups, see #5701 if ( parent.parentNode ) { parent.parentNode.selectedIndex; } } } // If applicable, access the attribute via the DOM 0 way if ( name in elem && notxml && !special ) { if ( set ) { // We can't allow the type property to be changed (since it causes problems in IE) if ( name === "type" && rtype.test( elem.nodeName ) && elem.parentNode ) { jQuery.error( "type property can't be changed" ); } elem[ name ] = value; } // browsers index elements by id/name on forms, give priority to attributes. if ( jQuery.nodeName( elem, "form" ) && elem.getAttributeNode(name) ) { return elem.getAttributeNode( name ).nodeValue; } // elem.tabIndex doesn't always return the correct value when it hasn't been explicitly set // http://fluidproject.org/blog/2008/01/09/getting-setting-and-removing-tabindex-values-with-javascript/ if ( name === "tabIndex" ) { var attributeNode = elem.getAttributeNode( "tabIndex" ); return attributeNode && attributeNode.specified ? attributeNode.value : rfocusable.test( elem.nodeName ) || rclickable.test( elem.nodeName ) && elem.href ? 0 : undefined; } return elem[ name ]; } if ( !jQuery.support.style && notxml && name === "style" ) { if ( set ) { elem.style.cssText = "" + value; } return elem.style.cssText; } if ( set ) { // convert the value to a string (all browsers do this but IE) see #1070 elem.setAttribute( name, "" + value ); } var attr = !jQuery.support.hrefNormalized && notxml && special ? // Some attributes require a special call on IE elem.getAttribute( name, 2 ) : elem.getAttribute( name ); // Non-existent attributes return null, we normalize to undefined return attr === null ? undefined : attr; } // elem is actually elem.style ... set the style // Using attr for specific style information is now deprecated. Use style instead. return jQuery.style( elem, name, value ); } });
Section : Events
Properties : Namespacing
var rnamespaces = /\.(.*)$/, fcleanup = function( nm ) { return nm.replace(/[^\w\s\.\|`]/g, function( ch ) { return "\\" + ch; }); }; Object : Event
/* * A number of helper functions used for managing events. * Many of the ideas behind this code originated from * Dean Edwards' addEvent library. */ jQuery.event = { Function : add
Bind an event to an element
// Bind an event to an element // Original by Dean Edwards add: function( elem, types, handler, data ) { if ( elem.nodeType === 3 || elem.nodeType === 8 ) { return; } // For whatever reason, IE has trouble passing the window object // around, causing it to be cloned in the process if ( elem.setInterval && ( elem !== window && !elem.frameElement ) ) { elem = window; } var handleObjIn, handleObj; if ( handler.handler ) { handleObjIn = handler; handler = handleObjIn.handler; } // Make sure that the function being executed has a unique ID if ( !handler.guid ) { handler.guid = jQuery.guid++; } // Init the element's event structure var elemData = jQuery.data( elem ); // If no elemData is found then we must be trying to bind to one of the // banned noData elements if ( !elemData ) { return; } var events = elemData.events = elemData.events || {}, eventHandle = elemData.handle, eventHandle; if ( !eventHandle ) { elemData.handle = eventHandle = function() { // Handle the second event of a trigger and when // an event is called after a page has unloaded return typeof jQuery !== "undefined" && !jQuery.event.triggered ? jQuery.event.handle.apply( eventHandle.elem, arguments ) : undefined; }; } // Add elem as a property of the handle function // This is to prevent a memory leak with non-native events in IE. eventHandle.elem = elem; // Handle multiple events separated by a space // jQuery(...).bind("mouseover mouseout", fn); types = types.split(" "); var type, i = 0, namespaces; while ( (type = types[ i++ ]) ) { handleObj = handleObjIn ? jQuery.extend({}, handleObjIn) : { handler: handler, data: data }; // Namespaced event handlers if ( type.indexOf(".") > -1 ) { namespaces = type.split("."); type = namespaces.shift(); handleObj.namespace = namespaces.slice(0).sort().join("."); } else { namespaces = []; handleObj.namespace = ""; } handleObj.type = type; handleObj.guid = handler.guid; // Get the current list of functions bound to this event var handlers = events[ type ], special = jQuery.event.special[ type ] || {}; // Init the event handler queue if ( !handlers ) { handlers = events[ type ] = []; // Check for a special event handler // Only use addEventListener/attachEvent if the special // events handler returns false if ( !special.setup || special.setup.call( elem, data, namespaces, eventHandle ) === false ) { // Bind the global event handler to the element if ( elem.addEventListener ) { elem.addEventListener( type, eventHandle, false ); } else if ( elem.attachEvent ) { elem.attachEvent( "on" + type, eventHandle ); } } } if ( special.add ) { special.add.call( elem, handleObj ); if ( !handleObj.handler.guid ) { handleObj.handler.guid = handler.guid; } } // Add the function to the element's handler list handlers.push( handleObj ); // Keep track of which events have been used, for global triggering jQuery.event.global[ type ] = true; } // Nullify elem to prevent memory leaks in IE elem = null; }, Function : remove
Detach an event or set of events from an element
// Detach an event or set of events from an element remove: function( elem, types, handler, pos ) { // don't do events on text and comment nodes if ( elem.nodeType === 3 || elem.nodeType === 8 ) { return; } var ret, type, fn, i = 0, all, namespaces, namespace, special, eventType, handleObj, origType, elemData = jQuery.data( elem ), events = elemData && elemData.events; if ( !elemData || !events ) { return; } // types is actually an event object here if ( types && types.type ) { handler = types.handler; types = types.type; } // Unbind all events for the element if ( !types || typeof types === "string" && types.charAt(0) === "." ) { types = types || ""; for ( type in events ) { jQuery.event.remove( elem, type + types ); } return; } // Handle multiple events separated by a space // jQuery(...).unbind("mouseover mouseout", fn); types = types.split(" "); while ( (type = types[ i++ ]) ) { origType = type; handleObj = null; all = type.indexOf(".") < 0; namespaces = []; if ( !all ) { // Namespaced event handlers namespaces = type.split("."); type = namespaces.shift(); namespace = new RegExp("(^|\\.)" + jQuery.map( namespaces.slice(0).sort(), fcleanup ).join("\\.(?:.*\\.)?") + "(\\.|$)") } eventType = events[ type ]; if ( !eventType ) { continue; } if ( !handler ) { for ( var j = 0; j < eventType.length; j++ ) { handleObj = eventType[ j ]; if ( all || namespace.test( handleObj.namespace ) ) { jQuery.event.remove( elem, origType, handleObj.handler, j ); eventType.splice( j--, 1 ); } } continue; } special = jQuery.event.special[ type ] || {}; for ( var j = pos || 0; j < eventType.length; j++ ) { handleObj = eventType[ j ]; if ( handler.guid === handleObj.guid ) { // remove the given handler for the given type if ( all || namespace.test( handleObj.namespace ) ) { if ( pos == null ) { eventType.splice( j--, 1 ); } if ( special.remove ) { special.remove.call( elem, handleObj ); } } if ( pos != null ) { break; } } } // remove generic event handler if no more handlers exist if ( eventType.length === 0 || pos != null && eventType.length === 1 ) { if ( !special.teardown || special.teardown.call( elem, namespaces ) === false ) { removeEvent( elem, type, elemData.handle ); } ret = null; delete events[ type ]; } } // Remove the expando if it's no longer used if ( jQuery.isEmptyObject( events ) ) { var handle = elemData.handle; if ( handle ) { handle.elem = null; } delete elemData.events; delete elemData.handle; if ( jQuery.isEmptyObject( elemData ) ) { jQuery.removeData( elem ); } } }, Function : trigger
Execute all handlers and behaviors attached to the matched elements for the given event type
// bubbling is internal trigger: function( event, data, elem /*, bubbling */ ) { // Event object or event type var type = event.type || event, bubbling = arguments[3]; if ( !bubbling ) { event = typeof event === "object" ? // jQuery.Event object event[expando] ? event : // Object literal jQuery.extend( jQuery.Event(type), event ) : // Just the event type (string) jQuery.Event(type); if ( type.indexOf("!") >= 0 ) { event.type = type = type.slice(0, -1); event.exclusive = true; } // Handle a global trigger if ( !elem ) { // Don't bubble custom events when global (to avoid too much overhead) event.stopPropagation(); // Only trigger if we've ever bound an event for it if ( jQuery.event.global[ type ] ) { jQuery.each( jQuery.cache, function() { if ( this.events && this.events[type] ) { jQuery.event.trigger( event, data, this.handle.elem ); } }); } } // Handle triggering a single element // don't do events on text and comment nodes if ( !elem || elem.nodeType === 3 || elem.nodeType === 8 ) { return undefined; } // Clean up in case it is reused event.result = undefined; event.target = elem; // Clone the incoming data, if any data = jQuery.makeArray( data ); data.unshift( event ); } event.currentTarget = elem; // Trigger the event, it is assumed that "handle" is a function var handle = jQuery.data( elem, "handle" ); if ( handle ) { handle.apply( elem, data ); } var parent = elem.parentNode || elem.ownerDocument; // Trigger an inline bound script try { if ( !(elem && elem.nodeName && jQuery.noData[elem.nodeName.toLowerCase()]) ) { if ( elem[ "on" + type ] && elem[ "on" + type ].apply( elem, data ) === false ) { event.result = false; } } // prevent IE from throwing an error for some elements with some event types, see #3533 } catch (e) {} if ( !event.isPropagationStopped() && parent ) { jQuery.event.trigger( event, data, parent, true ); } else if ( !event.isDefaultPrevented() ) { var target = event.target, old, isClick = jQuery.nodeName(target, "a") && type === "click", special = jQuery.event.special[ type ] || {}; if ( (!special._default || special._default.call( elem, event ) === false) && !isClick && !(target && target.nodeName && jQuery.noData[target.nodeName.toLowerCase()]) ) { try { if ( target[ type ] ) { // Make sure that we don't accidentally re-trigger the onFOO events old = target[ "on" + type ]; if ( old ) { target[ "on" + type ] = null; } jQuery.event.triggered = true; target[ type ](); } // prevent IE from throwing an error for some elements with some event types, see #3533 } catch (e) {} if ( old ) { target[ "on" + type ] = old; } jQuery.event.triggered = false; } } }, Function : handle
Internal function
handle: function( event ) { var all, handlers, namespaces, namespace, events; event = arguments[0] = jQuery.event.fix( event || window.event ); event.currentTarget = this; // Namespaced event handlers all = event.type.indexOf(".") < 0 && !event.exclusive; if ( !all ) { namespaces = event.type.split("."); event.type = namespaces.shift(); namespace = new RegExp("(^|\\.)" + namespaces.slice(0).sort().join("\\.(?:.*\\.)?") + "(\\.|$)"); } var events = jQuery.data(this, "events"), handlers = events[ event.type ]; if ( events && handlers ) { // Clone the handlers to prevent manipulation handlers = handlers.slice(0); for ( var j = 0, l = handlers.length; j < l; j++ ) { var handleObj = handlers[ j ]; // Filter the functions by class if ( all || namespace.test( handleObj.namespace ) ) { // Pass in a reference to the handler function itself // So that we can later remove it event.handler = handleObj.handler; event.data = handleObj.data; event.handleObj = handleObj; var ret = handleObj.handler.apply( this, arguments ); if ( ret !== undefined ) { event.result = ret; if ( ret === false ) { event.preventDefault(); event.stopPropagation(); } } if ( event.isImmediatePropagationStopped() ) { break; } } } } return event.result; }, Properties : Props
props: "altKey attrChange attrName bubbles button cancelable charCode clientX clientY ctrlKey currentTarget data detail eventPhase fromElement handler keyCode layerX layerY metaKey newValue offsetX offsetY originalTarget pageX pageY prevValue relatedNode relatedTarget screenX screenY shiftKey srcElement target toElement view wheelDelta which".split(" "), Function : fix
Internal function
fix: function( event ) { if ( event[ expando ] ) { return event; } // store a copy of the original event object // and "clone" to set read-only properties var originalEvent = event; event = jQuery.Event( originalEvent ); for ( var i = this.props.length, prop; i; ) { prop = this.props[ --i ]; event[ prop ] = originalEvent[ prop ]; } // Fix target property, if necessary if ( !event.target ) { event.target = event.srcElement || document; // Fixes #1925 where srcElement might not be defined either } // check if target is a textnode (safari) if ( event.target.nodeType === 3 ) { event.target = event.target.parentNode; } // Add relatedTarget, if necessary if ( !event.relatedTarget && event.fromElement ) { event.relatedTarget = event.fromElement === event.target ? event.toElement : event.fromElement; } // Calculate pageX/Y if missing and clientX/Y available if ( event.pageX == null && event.clientX != null ) { var doc = document.documentElement, body = document.body; event.pageX = event.clientX + (doc && doc.scrollLeft || body && body.scrollLeft || 0) - (doc && doc.clientLeft || body && body.clientLeft || 0); event.pageY = event.clientY + (doc && doc.scrollTop || body && body.scrollTop || 0) - (doc && doc.clientTop || body && body.clientTop || 0); } // Add which for key events if ( !event.which && ((event.charCode || event.charCode === 0) ? event.charCode : event.keyCode) ) { event.which = event.charCode || event.keyCode; } // Add metaKey to non-Mac browsers (use ctrl for PC's and Meta for Macs) if ( !event.metaKey && event.ctrlKey ) { event.metaKey = event.ctrlKey; } // Add which for click: 1 === left; 2 === middle; 3 === right // Note: button is not normalized, so don't use it if ( !event.which && event.button !== undefined ) { event.which = (event.button & 1 ? 1 : ( event.button & 2 ? 3 : ( event.button & 4 ? 2 : 0 ) )); } return event; }, Properties : Guid
// Deprecated, use jQuery.guid instead guid: 1E8,
Properties : Proxy
// Deprecated, use jQuery.proxy instead proxy: jQuery.proxy,
Object : Special
special: { ready: { // Make sure the ready event is setup setup: jQuery.bindReady, teardown: jQuery.noop }, live: { add: function( handleObj ) { jQuery.event.add( this, handleObj.origType, jQuery.extend({}, handleObj, {handler: liveHandler}) ); }, remove: function( handleObj ) { var remove = true, type = handleObj.origType.replace(rnamespaces, ""); jQuery.each( jQuery.data(this, "events").live || [], function() { if ( type === this.origType.replace(rnamespaces, "") ) { remove = false; return false; } }); if ( remove ) { jQuery.event.remove( this, handleObj.origType, liveHandler ); } } }, beforeunload: { setup: function( data, namespaces, eventHandle ) { // We only want to do this special case on windows if ( this.setInterval ) { this.onbeforeunload = eventHandle; } return false; }, teardown: function( namespaces, eventHandle ) { if ( this.onbeforeunload === eventHandle ) { this.onbeforeunload = null; } } } } };
Function : removeEvent
If this method is called, the default action of the event will not be triggered
var removeEvent = document.removeEventListener ? function( elem, type, handle ) { elem.removeEventListener( type, handle, false ); } : function( elem, type, handle ) { elem.detachEvent( "on" + type, handle ); }; Object : Event
jQuery.Event = function( src ) { // Allow instantiation without the 'new' keyword if ( !this.preventDefault ) { return new jQuery.Event( src ); } // Event object if ( src && src.type ) { this.originalEvent = src; this.type = src.type; // Event type } else { this.type = src; } // timeStamp is buggy for some events on Firefox(#3843) // So we won't rely on the native value this.timeStamp = now(); // Mark it as fixed this[ expando ] = true; }; Object : Event
// jQuery.Event is based on DOM3 Events as specified by the ECMAScript Language Binding // http://www.w3.org/TR/2003/WD-DOM-Level-3-Events-20030331/ecma-script-binding.html jQuery.Event.prototype = { Function : preventDefault
Description
preventDefault: function() { this.isDefaultPrevented = returnTrue; var e = this.originalEvent; if ( !e ) { return; } // if preventDefault exists run it on the original event if ( e.preventDefault ) { e.preventDefault(); } // otherwise set the returnValue property of the original event to false (IE) e.returnValue = false; }, Function : stopPropagation
Description
stopPropagation: function() { this.isPropagationStopped = returnTrue; var e = this.originalEvent; if ( !e ) { return; } // if stopPropagation exists run it on the original event if ( e.stopPropagation ) { e.stopPropagation(); } // otherwise set the cancelBubble property of the original event to true (IE) e.cancelBubble = true; }, Function : stopImmediatePropagation
Description
stopImmediatePropagation: function() { this.isImmediatePropagationStopped = returnTrue; this.stopPropagation(); }, isDefaultPrevented: returnFalse, isPropagationStopped: returnFalse, isImmediatePropagationStopped: returnFalse };
Properties : Event code
// Checks if an event happened on an element within another element // Used in jQuery.event.special.mouseenter and mouseleave handlers var withinElement = function( event ) { // Check if mouse(over|out) are still within the same parent element var parent = event.relatedTarget; // Firefox sometimes assigns relatedTarget a XUL element // which we cannot access the parentNode property of try { // Traverse up the tree while ( parent && parent !== this ) { parent = parent.parentNode; } if ( parent !== this ) { // set the correct event type event.type = event.data; // handle event if we actually just moused on to a non sub-element jQuery.event.handle.apply( this, arguments ); } // assuming we've left the element since we most likely mousedover a xul element } catch(e) { } }, // In case of event delegation, we only need to rename the event.type, // liveHandler will take care of the rest. delegate = function( event ) { event.type = event.data; jQuery.event.handle.apply( this, arguments ); }; Code : mouseenter & mouseleave events
// Create mouseenter and mouseleave events jQuery.each({ mouseenter: "mouseover", mouseleave: "mouseout" }, function( orig, fix ) { jQuery.event.special[ orig ] = { setup: function( data ) { jQuery.event.add( this, fix, data && data.selector ? delegate : withinElement, orig ); }, teardown: function( data ) { jQuery.event.remove( this, fix, data && data.selector ? delegate : withinElement ); } }; }); Code : submit event
// submit delegation if ( !jQuery.support.submitBubbles ) { jQuery.event.special.submit = { setup: function( data, namespaces ) { if ( this.nodeName.toLowerCase() !== "form" ) { jQuery.event.add(this, "click.specialSubmit", function( e ) { var elem = e.target, type = elem.type; if ( (type === "submit" || type === "image") && jQuery( elem ).closest("form").length ) { return trigger( "submit", this, arguments ); } }); jQuery.event.add(this, "keypress.specialSubmit", function( e ) { var elem = e.target, type = elem.type; if ( (type === "text" || type === "password") && jQuery( elem ).closest("form").length && e.keyCode === 13 ) { return trigger( "submit", this, arguments ); } }); } else { return false; } }, teardown: function( namespaces ) { jQuery.event.remove( this, ".specialSubmit" ); } }; } Code : change event
// change delegation, happens here so we have bind. if ( !jQuery.support.changeBubbles ) { var formElems = /textarea|input|select/i, changeFilters, getVal = function( elem ) { var type = elem.type, val = elem.value; if ( type === "radio" || type === "checkbox" ) { val = elem.checked; } else if ( type === "select-multiple" ) { val = elem.selectedIndex > -1 ? jQuery.map( elem.options, function( elem ) { return elem.selected; }).join("-") : ""; } else if ( elem.nodeName.toLowerCase() === "select" ) { val = elem.selectedIndex; } return val; }, testChange = function testChange( e ) { var elem = e.target, data, val; if ( !formElems.test( elem.nodeName ) || elem.readOnly ) { return; } data = jQuery.data( elem, "_change_data" ); val = getVal(elem); // the current data will be also retrieved by beforeactivate if ( e.type !== "focusout" || elem.type !== "radio" ) { jQuery.data( elem, "_change_data", val ); } if ( data === undefined || val === data ) { return; } if ( data != null || val ) { e.type = "change"; return jQuery.event.trigger( e, arguments[1], elem ); } }; jQuery.event.special.change = { filters: { focusout: testChange, click: function( e ) { var elem = e.target, type = elem.type; if ( type === "radio" || type === "checkbox" || elem.nodeName.toLowerCase() === "select" ) { return testChange.call( this, e ); } }, // Change has to be called before submit // Keydown will be called before keypress, which is used in submit-event delegation keydown: function( e ) { var elem = e.target, type = elem.type; if ( (e.keyCode === 13 && elem.nodeName.toLowerCase() !== "textarea") || (e.keyCode === 32 && (type === "checkbox" || type === "radio")) || type === "select-multiple" ) { return testChange.call( this, e ); } }, // Beforeactivate happens also before the previous element is blurred // with this event you can't trigger a change event, but you can store // information/focus[in] is not needed anymore beforeactivate: function( e ) { var elem = e.target; jQuery.data( elem, "_change_data", getVal(elem) ); } }, setup: function( data, namespaces ) { if ( this.type === "file" ) { return false; } for ( var type in changeFilters ) { jQuery.event.add( this, type + ".specialChange", changeFilters[type] ); } return formElems.test( this.nodeName ); }, teardown: function( namespaces ) { jQuery.event.remove( this, ".specialChange" ); return formElems.test( this.nodeName ); } }; changeFilters = jQuery.event.special.change.filters; } Code : trigger function
function trigger( type, elem, args ) { args[0].type = type; return jQuery.event.handle.apply( elem, args ); } // Create "bubbling" focus and blur events if ( document.addEventListener ) { jQuery.each({ focus: "focusin", blur: "focusout" }, function( orig, fix ) { jQuery.event.special[ fix ] = { setup: function() { this.addEventListener( orig, handler, true ); }, teardown: function() { this.removeEventListener( orig, handler, true ); } }; function handler( e ) { e = jQuery.event.fix( e ); e.type = fix; return jQuery.event.handle.call( this, e ); } }); } jQuery.each(["bind", "one"], function( i, name ) { jQuery.fn[ name ] = function( type, data, fn ) { // Handle object literals if ( typeof type === "object" ) { for ( var key in type ) { this[ name ](key, data, type[key], fn); } return this; } if ( jQuery.isFunction( data ) ) { fn = data; data = undefined; } var handler = name === "one" ? jQuery.proxy( fn, function( event ) { jQuery( this ).unbind( event, handler ); return fn.apply( this, arguments ); }) : fn; if ( type === "unload" && name !== "one" ) { this.one( type, data, fn ); } else { for ( var i = 0, l = this.length; i < l; i++ ) { jQuery.event.add( this[i], type, handler, data ); } } return this; }; }); Extend : Event methods
jQuery.fn.extend({ Function : unbind
Remove a previously-attached event handler from the elements
unbind: function( type, fn ) { // Handle object literals if ( typeof type === "object" && !type.preventDefault ) { for ( var key in type ) { this.unbind(key, type[key]); } } else { for ( var i = 0, l = this.length; i < l; i++ ) { jQuery.event.remove( this[i], type, fn ); } } return this; }, Function : delegate
Attach a handler to one or more events for all elements that match the selector, now or in the future, based on a specific set of root elements
delegate: function( selector, types, data, fn ) { return this.live( types, data, fn, selector ); }, Function : undelegate
Remove a handler from the event for all elements which match the current selector, now or in the future, based upon a specific set of root elements
undelegate: function( selector, types, fn ) { if ( arguments.length === 0 ) { return this.unbind( "live" ); } else { return this.die( types, null, fn, selector ); } }, Function : trigger
Execute all handlers and behaviors attached to the matched elements for the given event type
trigger: function( type, data ) { return this.each(function() { jQuery.event.trigger( type, data, this ); }); }, Function : triggerHandler
Execute all handlers attached to an element for an event
triggerHandler: function( type, data ) { if ( this[0] ) { var event = jQuery.Event( type ); event.preventDefault(); event.stopPropagation(); jQuery.event.trigger( event, data, this[0] ); return event.result; } }, Function : toggle
Bind two or more handlers to the matched elements, to be executed on alternate clicks
toggle: function( fn ) { // Save reference to arguments for access in closure var args = arguments, i = 1; // link all the functions, so any of them can unbind this click handler while ( i < args.length ) { jQuery.proxy( fn, args[ i++ ] ); } return this.click( jQuery.proxy( fn, function( event ) { // Figure out which function to execute var lastToggle = ( jQuery.data( this, "lastToggle" + fn.guid ) || 0 ) % i; jQuery.data( this, "lastToggle" + fn.guid, lastToggle + 1 ); // Make sure that clicks stop event.preventDefault(); // and execute the function return args[ lastToggle ].apply( this, arguments ) || false; })); }, Function : hover
Bind two handlers to the matched elements, to be executed when the mouse pointer enters and leaves the elements
hover: function( fnOver, fnOut ) { return this.mouseenter( fnOver ).mouseleave( fnOut || fnOver ); } });
Properties : liveMap
var liveMap = { focus: "focusin", blur: "focusout", mouseenter: "mouseover", mouseleave: "mouseout" }; jQuery.each(["live", "die"], function( i, name ) { jQuery.fn[ name ] = function( types, data, fn, origSelector /* Internal Use Only */ ) { var type, i = 0, match, namespaces, preType, selector = origSelector || this.selector, context = origSelector ? this : jQuery( this.context ); if ( jQuery.isFunction( data ) ) { fn = data; data = undefined; } types = (types || "").split(" "); while ( (type = types[ i++ ]) != null ) { match = rnamespaces.exec( type ); namespaces = ""; if ( match ) { namespaces = match[0]; type = type.replace( rnamespaces, "" ); } if ( type === "hover" ) { types.push( "mouseenter" + namespaces, "mouseleave" + namespaces ); continue; } preType = type; if ( type === "focus" || type === "blur" ) { types.push( liveMap[ type ] + namespaces ); type = type + namespaces; } else { type = (liveMap[ type ] || type) + namespaces; } if ( name === "live" ) { // bind live handler context.each(function(){ jQuery.event.add( this, liveConvert( type, selector ), { data: data, selector: selector, handler: fn, origType: type, origHandler: fn, preType: preType } ); }); } else { // unbind live handler context.unbind( liveConvert( type, selector ), fn ); } } return this; } }); Code : liveHandler
function liveHandler( event ) { var stop, elems = [], selectors = [], args = arguments, related, match, handleObj, elem, j, i, l, data, events = jQuery.data( this, "events" ); // Make sure we avoid non-left-click bubbling in Firefox (#3861) if ( event.liveFired === this || !events || !events.live || event.button && event.type === "click" ) { return; } event.liveFired = this; var live = events.live.slice(0); for ( j = 0; j < live.length; j++ ) { handleObj = live[j]; if ( handleObj.origType.replace( rnamespaces, "" ) === event.type ) { selectors.push( handleObj.selector ); } else { live.splice( j--, 1 ); } } match = jQuery( event.target ).closest( selectors, event.currentTarget ); for ( i = 0, l = match.length; i < l; i++ ) { for ( j = 0; j < live.length; j++ ) { handleObj = live[j]; if ( match[i].selector === handleObj.selector ) { elem = match[i].elem; related = null; // Those two events require additional checking if ( handleObj.preType === "mouseenter" || handleObj.preType === "mouseleave" ) { related = jQuery( event.relatedTarget ).closest( handleObj.selector )[0]; } if ( !related || related !== elem ) { elems.push({ elem: elem, handleObj: handleObj }); } } } } for ( i = 0, l = elems.length; i < l; i++ ) { match = elems[i]; event.currentTarget = match.elem; event.data = match.handleObj.data; event.handleObj = match.handleObj; if ( match.handleObj.origHandler.apply( match.elem, args ) === false ) { stop = false; break; } } return stop; } Code : liveConvert
function liveConvert( type, selector ) { return "live." + (type && type !== "*" ? type + "." : "") + selector.replace(/\./g, "`").replace(/ /g, "&"); } Code : Assign events to jQuery prototype
jQuery.each( ("blur focus focusin focusout load resize scroll unload click dblclick " + "mousedown mouseup mousemove mouseover mouseout mouseenter mouseleave " + "change select submit keydown keypress keyup error").split(" "), function( i, name ) { // Handle event binding jQuery.fn[ name ] = function( fn ) { return fn ? this.bind( name, fn ) : this.trigger( name ); }; if ( jQuery.attrFn ) { jQuery.attrFn[ name ] = true; } }); Code : Prevent memory leaks in IE
// Prevent memory leaks in IE // Window isn't included so as not to unbind existing unload events // More info: // - http://isaacschlueter.com/2006/10/msie-memory-leaks/ if ( window.attachEvent && !window.addEventListener ) { window.attachEvent("onunload", function() { for ( var id in jQuery.cache ) { if ( jQuery.cache[ id ].handle ) { // Try/Catch is to handle iframes being unloaded, see #4280 try { jQuery.event.remove( jQuery.cache[ id ].handle.elem ); } catch(e) {} } } }); } Section : Sizzle CSS Selector Engine
/*! * Sizzle CSS Selector Engine - v1.0 * Copyright 2009, The Dojo Foundation * Released under the MIT, BSD, and GPL Licenses. * More information: http://sizzlejs.com/ */ (function(){ Properties : Sizzle variables
var chunker = /((?:\((?:\([^()]+\)|[^()]+)+\)|\[(?:\[[^[\]]*\]|['"][^'"]*['"]|[^[\]'"]+)+\]|\\.|[^ >+~,(\[\\]+)+|[>+~])(\s*,\s*)?((?:.|\r|\n)*)/g, done = 0, toString = Object.prototype.toString, hasDuplicate = false, baseHasDuplicate = true; // Here we check if the JavaScript engine is using some sort of // optimization where it does not always call our comparision // function. If that is the case, discard the hasDuplicate value. // Thus far that includes Google Chrome. [0, 0].sort(function(){ baseHasDuplicate = false; return 0; }); Function : Sizzle constructor
var Sizzle = function(selector, context, results, seed) { results = results || []; var origContext = context = context || document; if ( context.nodeType !== 1 && context.nodeType !== 9 ) { return []; } if ( !selector || typeof selector !== "string" ) { return results; } var parts = [], m, set, checkSet, extra, prune = true, contextXML = isXML(context), soFar = selector; // Reset the position of the chunker regexp (start from head) while ( (chunker.exec(""), m = chunker.exec(soFar)) !== null ) { soFar = m[3]; parts.push( m[1] ); if ( m[2] ) { extra = m[3]; break; } } if ( parts.length > 1 && origPOS.exec( selector ) ) { if ( parts.length === 2 && Expr.relative[ parts[0] ] ) { set = posProcess( parts[0] + parts[1], context ); } else { set = Expr.relative[ parts[0] ] ? [ context ] : Sizzle( parts.shift(), context ); while ( parts.length ) { selector = parts.shift(); if ( Expr.relative[ selector ] ) { selector += parts.shift(); } set = posProcess( selector, set ); } } } else { // Take a shortcut and set the context if the root selector is an ID // (but not if it'll be faster if the inner selector is an ID) if ( !seed && parts.length > 1 && context.nodeType === 9 && !contextXML && Expr.match.ID.test(parts[0]) && !Expr.match.ID.test(parts[parts.length - 1]) ) { var ret = Sizzle.find( parts.shift(), context, contextXML ); context = ret.expr ? Sizzle.filter( ret.expr, ret.set )[0] : ret.set[0]; } if ( context ) { var ret = seed ? { expr: parts.pop(), set: makeArray(seed) } : Sizzle.find( parts.pop(), parts.length === 1 && (parts[0] === "~" || parts[0] === "+") && context.parentNode ? context.parentNode : context, contextXML ); set = ret.expr ? Sizzle.filter( ret.expr, ret.set ) : ret.set; if ( parts.length > 0 ) { checkSet = makeArray(set); } else { prune = false; } while ( parts.length ) { var cur = parts.pop(), pop = cur; if ( !Expr.relative[ cur ] ) { cur = ""; } else { pop = parts.pop(); } if ( pop == null ) { pop = context; } Expr.relative[ cur ]( checkSet, pop, contextXML ); } } else { checkSet = parts = []; } } if ( !checkSet ) { checkSet = set; } if ( !checkSet ) { Sizzle.error( cur || selector ); } if ( toString.call(checkSet) === "[object Array]" ) { if ( !prune ) { results.push.apply( results, checkSet ); } else if ( context && context.nodeType === 1 ) { for ( var i = 0; checkSet[i] != null; i++ ) { if ( checkSet[i] && (checkSet[i] === true || checkSet[i].nodeType === 1 && contains(context, checkSet[i])) ) { results.push( set[i] ); } } } else { for ( var i = 0; checkSet[i] != null; i++ ) { if ( checkSet[i] && checkSet[i].nodeType === 1 ) { results.push( set[i] ); } } } } else { makeArray( checkSet, results ); } if ( extra ) { Sizzle( extra, origContext, results, seed ); Sizzle.uniqueSort( results ); } return results; }; Function : Sizzle.uniqueSort
Sizzle.uniqueSort = function(results){ if ( sortOrder ) { hasDuplicate = baseHasDuplicate; results.sort(sortOrder); if ( hasDuplicate ) { for ( var i = 1; i < results.length; i++ ) { if ( results[i] === results[i-1] ) { results.splice(i--, 1); } } } } return results; }; Function : Sizzle.matches
Sizzle.matches = function(expr, set){ return Sizzle(expr, null, null, set); }; Function : Sizzle.find
Sizzle.find = function(expr, context, isXML){ var set, match; if ( !expr ) { return []; } for ( var i = 0, l = Expr.order.length; i < l; i++ ) { var type = Expr.order[i], match; if ( (match = Expr.leftMatch[ type ].exec( expr )) ) { var left = match[1]; match.splice(1,1); if ( left.substr( left.length - 1 ) !== "\\" ) { match[1] = (match[1] || "").replace(/\\/g, ""); set = Expr.find[ type ]( match, context, isXML ); if ( set != null ) { expr = expr.replace( Expr.match[ type ], "" ); break; } } } } if ( !set ) { set = context.getElementsByTagName("*"); } return {set: set, expr: expr}; }; Function : Sizzle.filter
Sizzle.filter = function(expr, set, inplace, not){ var old = expr, result = [], curLoop = set, match, anyFound, isXMLFilter = set && set[0] && isXML(set[0]); while ( expr && set.length ) { for ( var type in Expr.filter ) { if ( (match = Expr.leftMatch[ type ].exec( expr )) != null && match[2] ) { var filter = Expr.filter[ type ], found, item, left = match[1]; anyFound = false; match.splice(1,1); if ( left.substr( left.length - 1 ) === "\\" ) { continue; } if ( curLoop === result ) { result = []; } if ( Expr.preFilter[ type ] ) { match = Expr.preFilter[ type ]( match, curLoop, inplace, result, not, isXMLFilter ); if ( !match ) { anyFound = found = true; } else if ( match === true ) { continue; } } if ( match ) { for ( var i = 0; (item = curLoop[i]) != null; i++ ) { if ( item ) { found = filter( item, match, i, curLoop ); var pass = not ^ !!found; if ( inplace && found != null ) { if ( pass ) { anyFound = true; } else { curLoop[i] = false; } } else if ( pass ) { result.push( item ); anyFound = true; } } } } if ( found !== undefined ) { if ( !inplace ) { curLoop = result; } expr = expr.replace( Expr.match[ type ], "" ); if ( !anyFound ) { return []; } break; } } } // Improper expression if ( expr === old ) { if ( anyFound == null ) { Sizzle.error( expr ); } else { break; } } old = expr; } return curLoop; }; Function : Sizzle.error
Sizzle.error = function( msg ) { throw "Syntax error, unrecognized expression: " + msg; }; Object : Sizzle selectors
var Expr = Sizzle.selectors = { order: [ "ID", "NAME", "TAG" ], match: { ID: /#((?:[\w\u00c0-\uFFFF-]|\\.)+)/, CLASS: /\.((?:[\w\u00c0-\uFFFF-]|\\.)+)/, NAME: /\[name=['"]*((?:[\w\u00c0-\uFFFF-]|\\.)+)['"]*\]/, ATTR: /\[\s*((?:[\w\u00c0-\uFFFF-]|\\.)+)\s*(?:(\S?=)\s*(['"]*)(.*?)\3|)\s*\]/, TAG: /^((?:[\w\u00c0-\uFFFF\*-]|\\.)+)/, CHILD: /:(only|nth|last|first)-child(?:\((even|odd|[\dn+-]*)\))?/, POS: /:(nth|eq|gt|lt|first|last|even|odd)(?:\((\d*)\))?(?=[^-]|$)/, PSEUDO: /:((?:[\w\u00c0-\uFFFF-]|\\.)+)(?:\((['"]?)((?:\([^\)]+\)|[^\(\)]*)+)\2\))?/ }, leftMatch: {}, attrMap: { "class": "className", "for": "htmlFor" }, attrHandle: { href: function(elem){ return elem.getAttribute("href"); } }, relative: { "+": function(checkSet, part){ var isPartStr = typeof part === "string", isTag = isPartStr && !/\W/.test(part), isPartStrNotTag = isPartStr && !isTag; if ( isTag ) { part = part.toLowerCase(); } for ( var i = 0, l = checkSet.length, elem; i < l; i++ ) { if ( (elem = checkSet[i]) ) { while ( (elem = elem.previousSibling) && elem.nodeType !== 1 ) {} checkSet[i] = isPartStrNotTag || elem && elem.nodeName.toLowerCase() === part ? elem || false : elem === part; } } if ( isPartStrNotTag ) { Sizzle.filter( part, checkSet, true ); } }, ">": function(checkSet, part){ var isPartStr = typeof part === "string"; if ( isPartStr && !/\W/.test(part) ) { part = part.toLowerCase(); for ( var i = 0, l = checkSet.length; i < l; i++ ) { var elem = checkSet[i]; if ( elem ) { var parent = elem.parentNode; checkSet[i] = parent.nodeName.toLowerCase() === part ? parent : false; } } } else { for ( var i = 0, l = checkSet.length; i < l; i++ ) { var elem = checkSet[i]; if ( elem ) { checkSet[i] = isPartStr ? elem.parentNode : elem.parentNode === part; } } if ( isPartStr ) { Sizzle.filter( part, checkSet, true ); } } }, "": function(checkSet, part, isXML){ var doneName = done++, checkFn = dirCheck; if ( typeof part === "string" && !/\W/.test(part) ) { var nodeCheck = part = part.toLowerCase(); checkFn = dirNodeCheck; } checkFn("parentNode", part, doneName, checkSet, nodeCheck, isXML); }, "~": function(checkSet, part, isXML){ var doneName = done++, checkFn = dirCheck; if ( typeof part === "string" && !/\W/.test(part) ) { var nodeCheck = part = part.toLowerCase(); checkFn = dirNodeCheck; } checkFn("previousSibling", part, doneName, checkSet, nodeCheck, isXML); } }, find: { ID: function(match, context, isXML){ if ( typeof context.getElementById !== "undefined" && !isXML ) { var m = context.getElementById(match[1]); return m ? [m] : []; } }, NAME: function(match, context){ if ( typeof context.getElementsByName !== "undefined" ) { var ret = [], results = context.getElementsByName(match[1]); for ( var i = 0, l = results.length; i < l; i++ ) { if ( results[i].getAttribute("name") === match[1] ) { ret.push( results[i] ); } } return ret.length === 0 ? null : ret; } }, TAG: function(match, context){ return context.getElementsByTagName(match[1]); } }, preFilter: { CLASS: function(match, curLoop, inplace, result, not, isXML){ match = " " + match[1].replace(/\\/g, "") + " "; if ( isXML ) { return match; } for ( var i = 0, elem; (elem = curLoop[i]) != null; i++ ) { if ( elem ) { if ( not ^ (elem.className && (" " + elem.className + " ").replace(/[\t\n]/g, " ").indexOf(match) >= 0) ) { if ( !inplace ) { result.push( elem ); } } else if ( inplace ) { curLoop[i] = false; } } } return false; }, ID: function(match){ return match[1].replace(/\\/g, ""); }, TAG: function(match, curLoop){ return match[1].toLowerCase(); }, CHILD: function(match){ if ( match[1] === "nth" ) { // parse equations like 'even', 'odd', '5', '2n', '3n+2', '4n-1', '-n+6' var test = /(-?)(\d*)n((?:\+|-)?\d*)/.exec( match[2] === "even" && "2n" || match[2] === "odd" && "2n+1" || !/\D/.test( match[2] ) && "0n+" + match[2] || match[2]); // calculate the numbers (first)n+(last) including if they are negative match[2] = (test[1] + (test[2] || 1)) - 0; match[3] = test[3] - 0; } // TODO: Move to normal caching system match[0] = done++; return match; }, ATTR: function(match, curLoop, inplace, result, not, isXML){ var name = match[1].replace(/\\/g, ""); if ( !isXML && Expr.attrMap[name] ) { match[1] = Expr.attrMap[name]; } if ( match[2] === "~=" ) { match[4] = " " + match[4] + " "; } return match; }, PSEUDO: function(match, curLoop, inplace, result, not){ if ( match[1] === "not" ) { // If we're dealing with a complex expression, or a simple one if ( ( chunker.exec(match[3]) || "" ).length > 1 || /^\w/.test(match[3]) ) { match[3] = Sizzle(match[3], null, null, curLoop); } else { var ret = Sizzle.filter(match[3], curLoop, inplace, true ^ not); if ( !inplace ) { result.push.apply( result, ret ); } return false; } } else if ( Expr.match.POS.test( match[0] ) || Expr.match.CHILD.test( match[0] ) ) { return true; } return match; }, POS: function(match){ match.unshift( true ); return match; } }, filters: { enabled: function(elem){ return elem.disabled === false && elem.type !== "hidden"; }, disabled: function(elem){ return elem.disabled === true; }, checked: function(elem){ return elem.checked === true; }, selected: function(elem){ // Accessing this property makes selected-by-default // options in Safari work properly elem.parentNode.selectedIndex; return elem.selected === true; }, parent: function(elem){ return !!elem.firstChild; }, empty: function(elem){ return !elem.firstChild; }, has: function(elem, i, match){ return !!Sizzle( match[3], elem ).length; }, header: function(elem){ return /h\d/i.test( elem.nodeName ); }, text: function(elem){ return "text" === elem.type; }, radio: function(elem){ return "radio" === elem.type; }, checkbox: function(elem){ return "checkbox" === elem.type; }, file: function(elem){ return "file" === elem.type; }, password: function(elem){ return "password" === elem.type; }, submit: function(elem){ return "submit" === elem.type; }, image: function(elem){ return "image" === elem.type; }, reset: function(elem){ return "reset" === elem.type; }, button: function(elem){ return "button" === elem.type || elem.nodeName.toLowerCase() === "button"; }, input: function(elem){ return /input|select|textarea|button/i.test(elem.nodeName); } }, setFilters: { first: function(elem, i){ return i === 0; }, last: function(elem, i, match, array){ return i === array.length - 1; }, even: function(elem, i){ return i % 2 === 0; }, odd: function(elem, i){ return i % 2 === 1; }, lt: function(elem, i, match){ return i < match[3] - 0; }, gt: function(elem, i, match){ return i > match[3] - 0; }, nth: function(elem, i, match){ return match[3] - 0 === i; }, eq: function(elem, i, match){ return match[3] - 0 === i; } }, filter: { PSEUDO: function(elem, match, i, array){ var name = match[1], filter = Expr.filters[ name ]; if ( filter ) { return filter( elem, i, match, array ); } else if ( name === "contains" ) { return (elem.textContent || elem.innerText || getText([ elem ]) || "").indexOf(match[3]) >= 0; } else if ( name === "not" ) { var not = match[3]; for ( var i = 0, l = not.length; i < l; i++ ) { if ( not[i] === elem ) { return false; } } return true; } else { Sizzle.error( "Syntax error, unrecognized expression: " + name ); } }, CHILD: function(elem, match){ var type = match[1], node = elem; switch (type) { case 'only': case 'first': while ( (node = node.previousSibling) ) { if ( node.nodeType === 1 ) { return false; } } if ( type === "first" ) { return true; } node = elem; case 'last': while ( (node = node.nextSibling) ) { if ( node.nodeType === 1 ) { return false; } } return true; case 'nth': var first = match[2], last = match[3]; if ( first === 1 && last === 0 ) { return true; } var doneName = match[0], parent = elem.parentNode; if ( parent && (parent.sizcache !== doneName || !elem.nodeIndex) ) { var count = 0; for ( node = parent.firstChild; node; node = node.nextSibling ) { if ( node.nodeType === 1 ) { node.nodeIndex = ++count; } } parent.sizcache = doneName; } var diff = elem.nodeIndex - last; if ( first === 0 ) { return diff === 0; } else { return ( diff % first === 0 && diff / first >= 0 ); } } }, ID: function(elem, match){ return elem.nodeType === 1 && elem.getAttribute("id") === match; }, TAG: function(elem, match){ return (match === "*" && elem.nodeType === 1) || elem.nodeName.toLowerCase() === match; }, CLASS: function(elem, match){ return (" " + (elem.className || elem.getAttribute("class")) + " ") .indexOf( match ) > -1; }, ATTR: function(elem, match){ var name = match[1], result = Expr.attrHandle[ name ] ? Expr.attrHandle[ name ]( elem ) : elem[ name ] != null ? elem[ name ] : elem.getAttribute( name ), value = result + "", type = match[2], check = match[4]; return result == null ? type === "!=" : type === "=" ? value === check : type === "*=" ? value.indexOf(check) >= 0 : type === "~=" ? (" " + value + " ").indexOf(check) >= 0 : !check ? value && result !== false : type === "!=" ? value !== check : type === "^=" ? value.indexOf(check) === 0 : type === "$=" ? value.substr(value.length - check.length) === check : type === "|=" ? value === check || value.substr(0, check.length + 1) === check + "-" : false; }, POS: function(elem, match, i, array){ var name = match[2], filter = Expr.setFilters[ name ]; if ( filter ) { return filter( elem, i, match, array ); } } } }; Code : Sizzle code
var origPOS = Expr.match.POS; for ( var type in Expr.match ) { Expr.match[ type ] = new RegExp( Expr.match[ type ].source + /(?![^\[]*\])(?![^\(]*\))/.source ); Expr.leftMatch[ type ] = new RegExp( /(^(?:.|\r|\n)*?)/.source + Expr.match[ type ].source.replace(/\\(\d+)/g, function(all, num){ return "\\" + (num - 0 + 1); })); } var makeArray = function(array, results) { array = Array.prototype.slice.call( array, 0 ); if ( results ) { results.push.apply( results, array ); return results; } return array; }; // Perform a simple check to determine if the browser is capable of // converting a NodeList to an array using builtin methods. // Also verifies that the returned array holds DOM nodes // (which is not the case in the Blackberry browser) try { Array.prototype.slice.call( document.documentElement.childNodes, 0 )[0].nodeType; // Provide a fallback method if it does not work } catch(e){ makeArray = function(array, results) { var ret = results || []; if ( toString.call(array) === "[object Array]" ) { Array.prototype.push.apply( ret, array ); } else { if ( typeof array.length === "number" ) { for ( var i = 0, l = array.length; i < l; i++ ) { ret.push( array[i] ); } } else { for ( var i = 0; array[i]; i++ ) { ret.push( array[i] ); } } } return ret; }; } var sortOrder; if ( document.documentElement.compareDocumentPosition ) { sortOrder = function( a, b ) { if ( !a.compareDocumentPosition || !b.compareDocumentPosition ) { if ( a == b ) { hasDuplicate = true; } return a.compareDocumentPosition ? -1 : 1; } var ret = a.compareDocumentPosition(b) & 4 ? -1 : a === b ? 0 : 1; if ( ret === 0 ) { hasDuplicate = true; } return ret; }; } else if ( "sourceIndex" in document.documentElement ) { sortOrder = function( a, b ) { if ( !a.sourceIndex || !b.sourceIndex ) { if ( a == b ) { hasDuplicate = true; } return a.sourceIndex ? -1 : 1; } var ret = a.sourceIndex - b.sourceIndex; if ( ret === 0 ) { hasDuplicate = true; } return ret; }; } else if ( document.createRange ) { sortOrder = function( a, b ) { if ( !a.ownerDocument || !b.ownerDocument ) { if ( a == b ) { hasDuplicate = true; } return a.ownerDocument ? -1 : 1; } var aRange = a.ownerDocument.createRange(), bRange = b.ownerDocument.createRange(); aRange.setStart(a, 0); aRange.setEnd(a, 0); bRange.setStart(b, 0); bRange.setEnd(b, 0); var ret = aRange.compareBoundaryPoints(Range.START_TO_END, bRange); if ( ret === 0 ) { hasDuplicate = true; } return ret; }; } // Utility function for retreiving the text value of an array of DOM nodes function getText( elems ) { var ret = "", elem; for ( var i = 0; elems[i]; i++ ) { elem = elems[i]; // Get the text from text nodes and CDATA nodes if ( elem.nodeType === 3 || elem.nodeType === 4 ) { ret += elem.nodeValue; // Traverse everything else, except comment nodes } else if ( elem.nodeType !== 8 ) { ret += getText( elem.childNodes ); } } return ret; } // Check to see if the browser returns elements by name when // querying by getElementById (and provide a workaround) (function(){ // We're going to inject a fake input element with a specified name var form = document.createElement("div"), id = "script" + (new Date).getTime(); form.innerHTML = "<a name='" + id + "'/>"; // Inject it into the root element, check its status, and remove it quickly var root = document.documentElement; root.insertBefore( form, root.firstChild ); // The workaround has to do additional checks after a getElementById // Which slows things down for other browsers (hence the branching) if ( document.getElementById( id ) ) { Expr.find.ID = function(match, context, isXML){ if ( typeof context.getElementById !== "undefined" && !isXML ) { var m = context.getElementById(match[1]); return m ? m.id === match[1] || typeof m.getAttributeNode !== "undefined" && m.getAttributeNode("id").nodeValue === match[1] ? [m] : undefined : []; } }; Expr.filter.ID = function(elem, match){ var node = typeof elem.getAttributeNode !== "undefined" && elem.getAttributeNode("id"); return elem.nodeType === 1 && node && node.nodeValue === match; }; } root.removeChild( form ); root = form = null; // release memory in IE })(); (function(){ // Check to see if the browser returns only elements // when doing getElementsByTagName("*") // Create a fake element var div = document.createElement("div"); div.appendChild( document.createComment("") ); // Make sure no comments are found if ( div.getElementsByTagName("*").length > 0 ) { Expr.find.TAG = function(match, context){ var results = context.getElementsByTagName(match[1]); // Filter out possible comments if ( match[1] === "*" ) { var tmp = []; for ( var i = 0; results[i]; i++ ) { if ( results[i].nodeType === 1 ) { tmp.push( results[i] ); } } results = tmp; } return results; }; } // Check to see if an attribute returns normalized href attributes div.innerHTML = "<a href='#'></a>"; if ( div.firstChild && typeof div.firstChild.getAttribute !== "undefined" && div.firstChild.getAttribute("href") !== "#" ) { Expr.attrHandle.href = function(elem){ return elem.getAttribute("href", 2); }; } div = null; // release memory in IE })(); if ( document.querySelectorAll ) { (function(){ var oldSizzle = Sizzle, div = document.createElement("div"); div.innerHTML = "<p class='TEST'></p>"; // Safari can't handle uppercase or unicode characters when // in quirks mode. if ( div.querySelectorAll && div.querySelectorAll(".TEST").length === 0 ) { return; } Sizzle = function(query, context, extra, seed){ context = context || document; // Only use querySelectorAll on non-XML documents // (ID selectors don't work in non-HTML documents) if ( !seed && context.nodeType === 9 && !isXML(context) ) { try { return makeArray( context.querySelectorAll(query), extra ); } catch(e){} } return oldSizzle(query, context, extra, seed); }; for ( var prop in oldSizzle ) { Sizzle[ prop ] = oldSizzle[ prop ]; } div = null; // release memory in IE })(); } (function(){ var div = document.createElement("div"); div.innerHTML = "<div class='test e'></div><div class='test'></div>"; // Opera can't find a second classname (in 9.6) // Also, make sure that getElementsByClassName actually exists if ( !div.getElementsByClassName || div.getElementsByClassName("e").length === 0 ) { return; } // Safari caches class attributes, doesn't catch changes (in 3.2) div.lastChild.className = "e"; if ( div.getElementsByClassName("e").length === 1 ) { return; } Expr.order.splice(1, 0, "CLASS"); Expr.find.CLASS = function(match, context, isXML) { if ( typeof context.getElementsByClassName !== "undefined" && !isXML ) { return context.getElementsByClassName(match[1]); } }; div = null; // release memory in IE })(); function dirNodeCheck( dir, cur, doneName, checkSet, nodeCheck, isXML ) { for ( var i = 0, l = checkSet.length; i < l; i++ ) { var elem = checkSet[i]; if ( elem ) { elem = elem[dir]; var match = false; while ( elem ) { if ( elem.sizcache === doneName ) { match = checkSet[elem.sizset]; break; } if ( elem.nodeType === 1 && !isXML ){ elem.sizcache = doneName; elem.sizset = i; } if ( elem.nodeName.toLowerCase() === cur ) { match = elem; break; } elem = elem[dir]; } checkSet[i] = match; } } } function dirCheck( dir, cur, doneName, checkSet, nodeCheck, isXML ) { for ( var i = 0, l = checkSet.length; i < l; i++ ) { var elem = checkSet[i]; if ( elem ) { elem = elem[dir]; var match = false; while ( elem ) { if ( elem.sizcache === doneName ) { match = checkSet[elem.sizset]; break; } if ( elem.nodeType === 1 ) { if ( !isXML ) { elem.sizcache = doneName; elem.sizset = i; } if ( typeof cur !== "string" ) { if ( elem === cur ) { match = true; break; } } else if ( Sizzle.filter( cur, [elem] ).length > 0 ) { match = elem; break; } } elem = elem[dir]; } checkSet[i] = match; } } } var contains = document.compareDocumentPosition ? function(a, b){ return !!(a.compareDocumentPosition(b) & 16); } : function(a, b){ return a !== b && (a.contains ? a.contains(b) : true); }; var isXML = function(elem){ // documentElement is verified for cases where it doesn't yet exist // (such as loading iframes in IE - #4833) var documentElement = (elem ? elem.ownerDocument || elem : 0).documentElement; return documentElement ? documentElement.nodeName !== "HTML" : false; }; var posProcess = function(selector, context){ var tmpSet = [], later = "", match, root = context.nodeType ? [context] : context; // Position selectors must be done after the filter // And so must :not(positional) so we move all PSEUDOs to the end while ( (match = Expr.match.PSEUDO.exec( selector )) ) { later += match[0]; selector = selector.replace( Expr.match.PSEUDO, "" ); } selector = Expr.relative[selector] ? selector + "*" : selector; for ( var i = 0, l = root.length; i < l; i++ ) { Sizzle( selector, root[i], tmpSet ); } return Sizzle.filter( later, tmpSet ); }; // EXPOSE jQuery.find = Sizzle; jQuery.expr = Sizzle.selectors; jQuery.expr[":"] = jQuery.expr.filters; jQuery.unique = Sizzle.uniqueSort; jQuery.text = getText; jQuery.isXMLDoc = isXML; jQuery.contains = contains; return; window.Sizzle = Sizzle; })(); Section : Selectors
Properties : for selector methods
var runtil = /Until$/, rparentsprev = /^(?:parents|prevUntil|prevAll)/, // Note: This RegExp should be improved, or likely pulled from Sizzle rmultiselector = /,/, slice = Array.prototype.slice;
Function : Utility function for selector methods
// Implement the identical functionality for filter and not var winnow = function( elements, qualifier, keep ) { if ( jQuery.isFunction( qualifier ) ) { return jQuery.grep(elements, function( elem, i ) { return !!qualifier.call( elem, i, elem ) === keep; }); } else if ( qualifier.nodeType ) { return jQuery.grep(elements, function( elem, i ) { return (elem === qualifier) === keep; }); } else if ( typeof qualifier === "string" ) { var filtered = jQuery.grep(elements, function( elem ) { return elem.nodeType === 1; }); if ( isSimple.test( qualifier ) ) { return jQuery.filter(qualifier, filtered, !keep); } else { qualifier = jQuery.filter( qualifier, filtered ); } } return jQuery.grep(elements, function( elem, i ) { return (jQuery.inArray( elem, qualifier ) >= 0) === keep; }); }; Extend : Selector methods
jQuery.fn.extend({ Function : find
Get the descendants of each element in the current set of matched elements, filtered by a selector
find: function( selector ) { var ret = this.pushStack( "", "find", selector ), length = 0; for ( var i = 0, l = this.length; i < l; i++ ) { length = ret.length; jQuery.find( selector, this[i], ret ); if ( i > 0 ) { // Make sure that the results are unique for ( var n = length; n < ret.length; n++ ) { for ( var r = 0; r < length; r++ ) { if ( ret[r] === ret[n] ) { ret.splice(n--, 1); break; } } } } } return ret; }, Function : has
Reduce the set of matched elements to those that have a descendant that matches the selector or DOM element
has: function( target ) { var targets = jQuery( target ); return this.filter(function() { for ( var i = 0, l = targets.length; i < l; i++ ) { if ( jQuery.contains( this, targets[i] ) ) { return true; } } }); }, Function : not
Remove elements from the set of matched elements
not: function( selector ) { return this.pushStack( winnow(this, selector, false), "not", selector); }, Function : filter
Reduce the set of matched elements to those that match the selector or pass the function's test
filter: function( selector ) { return this.pushStack( winnow(this, selector, true), "filter", selector ); }, Function : is
Check the current matched set of elements against a selector and return true if at least one of these elements matches the selector
is: function( selector ) { return !!selector && jQuery.filter( selector, this ).length > 0; }, Function : closest
Get the first ancestor element that matches the selector, beginning at the current element and progressing up through the DOM tree
closest: function( selectors, context ) { if ( jQuery.isArray( selectors ) ) { var ret = [], cur = this[0], match, matches = {}, selector; if ( cur && selectors.length ) { for ( var i = 0, l = selectors.length; i < l; i++ ) { selector = selectors[i]; if ( !matches[selector] ) { matches[selector] = jQuery.expr.match.POS.test( selector ) ? jQuery( selector, context || this.context ) : selector; } } while ( cur && cur.ownerDocument && cur !== context ) { for ( selector in matches ) { match = matches[selector]; if ( match.jquery ? match.index(cur) > -1 : jQuery(cur).is(match) ) { ret.push({ selector: selector, elem: cur }); delete matches[selector]; } } cur = cur.parentNode; } } return ret; } var pos = jQuery.expr.match.POS.test( selectors ) ? jQuery( selectors, context || this.context ) : null; return this.map(function( i, cur ) { while ( cur && cur.ownerDocument && cur !== context ) { if ( pos ? pos.index(cur) > -1 : jQuery(cur).is(selectors) ) { return cur; } cur = cur.parentNode; } return null; }); }, Function : index
Search for a given element from among the matched elements
// Determine the position of an element within // the matched set of elements index: function( elem ) { if ( !elem || typeof elem === "string" ) { return jQuery.inArray( this[0], // If it receives a string, the selector is used // If it receives nothing, the siblings are used elem ? jQuery( elem ) : this.parent().children() ); } // Locate the position of the desired element return jQuery.inArray( // If it receives a jQuery object, the first element is used elem.jquery ? elem[0] : elem, this ); }, Function : add
Add elements to the set of matched elements
add: function( selector, context ) { var set = typeof selector === "string" ? jQuery( selector, context || this.context ) : jQuery.makeArray( selector ), all = jQuery.merge( this.get(), set ); return this.pushStack( isDisconnected( set[0] ) || isDisconnected( all[0] ) ? all : jQuery.unique( all ) ); }, Function : andSelf
Add the previous set of elements on the stack to the current set
andSelf: function() { return this.add( this.prevObject ); } });
Code : Assign selectors
// A painfully simple check to see if an element is disconnected // from a document (should be improved, where feasible). function isDisconnected( node ) { return !node || !node.parentNode || node.parentNode.nodeType === 11; } jQuery.each({ parent: function( elem ) { var parent = elem.parentNode; return parent && parent.nodeType !== 11 ? parent : null; }, parents: function( elem ) { return jQuery.dir( elem, "parentNode" ); }, parentsUntil: function( elem, i, until ) { return jQuery.dir( elem, "parentNode", until ); }, next: function( elem ) { return jQuery.nth( elem, 2, "nextSibling" ); }, prev: function( elem ) { return jQuery.nth( elem, 2, "previousSibling" ); }, nextAll: function( elem ) { return jQuery.dir( elem, "nextSibling" ); }, prevAll: function( elem ) { return jQuery.dir( elem, "previousSibling" ); }, nextUntil: function( elem, i, until ) { return jQuery.dir( elem, "nextSibling", until ); }, prevUntil: function( elem, i, until ) { return jQuery.dir( elem, "previousSibling", until ); }, siblings: function( elem ) { return jQuery.sibling( elem.parentNode.firstChild, elem ); }, children: function( elem ) { return jQuery.sibling( elem.firstChild ); }, contents: function( elem ) { return jQuery.nodeName( elem, "iframe" ) ? elem.contentDocument || elem.contentWindow.document : jQuery.makeArray( elem.childNodes ); } }, function( name, fn ) { jQuery.fn[ name ] = function( until, selector ) { var ret = jQuery.map( this, fn, until ); if ( !runtil.test( name ) ) { selector = until; } if ( selector && typeof selector === "string" ) { ret = jQuery.filter( selector, ret ); } ret = this.length > 1 ? jQuery.unique( ret ) : ret; if ( (this.length > 1 || rmultiselector.test( selector )) && rparentsprev.test( name ) ) { ret = ret.reverse(); } return this.pushStack( ret, name, slice.call(arguments).join(",") ); }; }); Extend : More selector methods
jQuery.extend({ Function : filter
Reduce the set of matched elements to those that match the selector or pass the function's test
filter: function( expr, elems, not ) { if ( not ) { expr = ":not(" + expr + ")"; } return jQuery.find.matches(expr, elems); }, Function : dir
Internal function
dir: function( elem, dir, until ) { var matched = [], cur = elem[dir]; while ( cur && cur.nodeType !== 9 && (until === undefined || cur.nodeType !== 1 || !jQuery( cur ).is( until )) ) { if ( cur.nodeType === 1 ) { matched.push( cur ); } cur = cur[dir]; } return matched; }, Function : nth
Selects all elements that are the nth-child of their parent
nth: function( cur, result, dir, elem ) { result = result || 1; var num = 0; for ( ; cur; cur = cur[dir] ) { if ( cur.nodeType === 1 && ++num === result ) { break; } } return cur; }, Function : sibling
Get the siblings of each element in the set of matched elements, optionally filtered by a selector
sibling: function( n, elem ) { var r = []; for ( ; n; n = n.nextSibling ) { if ( n.nodeType === 1 && n !== elem ) { r.push( n ); } } return r; } });
Section : Manipulation
Properties : HTML variables
var rinlinejQuery = / jQuery\d+="(?:\d+|null)"/g, rleadingWhitespace = /^\s+/, rxhtmlTag = /(<([\w:]+)[^>]*?)\/>/g, rselfClosing = /^(?:area|br|col|embed|hr|img|input|link|meta|param)$/i, rtagName = /<([\w:]+)/, rtbody = /<tbody/i, rhtml = /<|&#?\w+;/, rnocache = /<script|<object|<embed|<option|<style/i, rchecked = /checked\s*(?:[^=]|=\s*.checked.)/i, // checked="checked" or checked (html5) fcloseTag = function( all, front, tag ) { return rselfClosing.test( tag ) ? all : front + "></" + tag + ">"; }, wrapMap = { option: [ 1, "<select multiple='multiple'>", "</select>" ], legend: [ 1, "<fieldset>", "</fieldset>" ], thead: [ 1, "<table>", "</table>" ], tr: [ 2, "<table><tbody>", "</tbody></table>" ], td: [ 3, "<table><tbody><tr>", "</tr></tbody></table>" ], col: [ 2, "<table><tbody></tbody><colgroup>", "</colgroup></table>" ], area: [ 1, "<map>", "</map>" ], _default: [ 0, "", "" ] }; wrapMap.optgroup = wrapMap.option; wrapMap.tbody = wrapMap.tfoot = wrapMap.colgroup = wrapMap.caption = wrapMap.thead; wrapMap.th = wrapMap.td; // IE can't serialize <link> and <script> tags normally if ( !jQuery.support.htmlSerialize ) { wrapMap._default = [ 1, "div<div>", "</div>" ]; } Extend : Manipulation methods
jQuery.fn.extend({ Function : text
Get the combined text contents of each element in the set of matched elements, including their descendants
text: function( text ) { if ( jQuery.isFunction(text) ) { return this.each(function(i) { var self = jQuery(this); self.text( text.call(this, i, self.text()) ); }); } if ( typeof text !== "object" && text !== undefined ) { return this.empty().append( (this[0] && this[0].ownerDocument || document).createTextNode( text ) ); } return jQuery.text( this ); }, Function : wrapAll
Wrap an HTML structure around all elements in the set of matched elements
wrapAll: function( html ) { if ( jQuery.isFunction( html ) ) { return this.each(function(i) { jQuery(this).wrapAll( html.call(this, i) ); }); } if ( this[0] ) { // The elements to wrap the target around var wrap = jQuery( html, this[0].ownerDocument ).eq(0).clone(true); if ( this[0].parentNode ) { wrap.insertBefore( this[0] ); } wrap.map(function() { var elem = this; while ( elem.firstChild && elem.firstChild.nodeType === 1 ) { elem = elem.firstChild; } return elem; }).append(this); } return this; }, Function : wrapInner
Wrap an HTML structure around the content of each element in the set of matched elements
wrapInner: function( html ) { if ( jQuery.isFunction( html ) ) { return this.each(function(i) { jQuery(this).wrapInner( html.call(this, i) ); }); } return this.each(function() { var self = jQuery( this ), contents = self.contents(); if ( contents.length ) { contents.wrapAll( html ); } else { self.append( html ); } }); }, Function : wrap
Wrap an HTML structure around each element in the set of matched elements
wrap: function( html ) { return this.each(function() { jQuery( this ).wrapAll( html ); }); }, Function : unwrap
Remove the parents of the set of matched elements from the DOM, leaving the matched elements in their place
unwrap: function() { return this.parent().each(function() { if ( !jQuery.nodeName( this, "body" ) ) { jQuery( this ).replaceWith( this.childNodes ); } }).end(); }, Function : append
Insert content, specified by the parameter, to the end of each element in the set of matched elements
append: function() { return this.domManip(arguments, true, function( elem ) { if ( this.nodeType === 1 ) { this.appendChild( elem ); } }); }, Function : prepend
Insert content, specified by the parameter, to the beginning of each element in the set of matched elements
prepend: function() { return this.domManip(arguments, true, function( elem ) { if ( this.nodeType === 1 ) { this.insertBefore( elem, this.firstChild ); } }); }, Function : before
Insert content, specified by the parameter, before each element in the set of matched elements
before: function() { if ( this[0] && this[0].parentNode ) { return this.domManip(arguments, false, function( elem ) { this.parentNode.insertBefore( elem, this ); }); } else if ( arguments.length ) { var set = jQuery(arguments[0]); set.push.apply( set, this.toArray() ); return this.pushStack( set, "before", arguments ); } }, Function : after
Insert content, specified by the parameter, after each element in the set of matched elements
after: function() { if ( this[0] && this[0].parentNode ) { return this.domManip(arguments, false, function( elem ) { this.parentNode.insertBefore( elem, this.nextSibling ); }); } else if ( arguments.length ) { var set = this.pushStack( this, "after", arguments ); set.push.apply( set, jQuery(arguments[0]).toArray() ); return set; } }, Function : remove
Remove the set of matched elements from the DOM
// keepData is for internal use only--do not document remove: function( selector, keepData ) { for ( var i = 0, elem; (elem = this[i]) != null; i++ ) { if ( !selector || jQuery.filter( selector, [ elem ] ).length ) { if ( !keepData && elem.nodeType === 1 ) { jQuery.cleanData( elem.getElementsByTagName("*") ); jQuery.cleanData( [ elem ] ); } if ( elem.parentNode ) { elem.parentNode.removeChild( elem ); } } } return this; }, Function : empty
Remove all child nodes of the set of matched elements from the DOM
empty: function() { for ( var i = 0, elem; (elem = this[i]) != null; i++ ) { // Remove element nodes and prevent memory leaks if ( elem.nodeType === 1 ) { jQuery.cleanData( elem.getElementsByTagName("*") ); } // Remove any remaining nodes while ( elem.firstChild ) { elem.removeChild( elem.firstChild ); } } return this; }, Function : clone
Create a copy of the set of matched elements
clone: function( events ) { // Do the clone var ret = this.map(function() { if ( !jQuery.support.noCloneEvent && !jQuery.isXMLDoc(this) ) { // IE copies events bound via attachEvent when // using cloneNode. Calling detachEvent on the // clone will also remove the events from the orignal // In order to get around this, we use innerHTML. // Unfortunately, this means some modifications to // attributes in IE that are actually only stored // as properties will not be copied (such as the // the name attribute on an input). var html = this.outerHTML, ownerDocument = this.ownerDocument; if ( !html ) { var div = ownerDocument.createElement("div"); div.appendChild( this.cloneNode(true) ); html = div.innerHTML; } return jQuery.clean([html.replace(rinlinejQuery, "") // Handle the case in IE 8 where action=/test/> self-closes a tag .replace(/=([^="'>\s]+\/)>/g, '="$1">') .replace(rleadingWhitespace, "")], ownerDocument)[0]; } else { return this.cloneNode(true); } }); // Copy the events from the original to the clone if ( events === true ) { cloneCopyEvent( this, ret ); cloneCopyEvent( this.find("*"), ret.find("*") ); } // Return the cloned set return ret; }, Function : html
Get the HTML contents of the first element in the set of matched elements
html: function( value ) { if ( value === undefined ) { return this[0] && this[0].nodeType === 1 ? this[0].innerHTML.replace(rinlinejQuery, "") : null; // See if we can take a shortcut and just use innerHTML } else if ( typeof value === "string" && !rnocache.test( value ) && (jQuery.support.leadingWhitespace || !rleadingWhitespace.test( value )) && !wrapMap[ (rtagName.exec( value ) || ["", ""])[1].toLowerCase() ] ) { value = value.replace(rxhtmlTag, fcloseTag); try { for ( var i = 0, l = this.length; i < l; i++ ) { // Remove element nodes and prevent memory leaks if ( this[i].nodeType === 1 ) { jQuery.cleanData( this[i].getElementsByTagName("*") ); this[i].innerHTML = value; } } // If using innerHTML throws an exception, use the fallback method } catch(e) { this.empty().append( value ); } } else if ( jQuery.isFunction( value ) ) { this.each(function(i){ var self = jQuery(this), old = self.html(); self.empty().append(function(){ return value.call( this, i, old ); }); }); } else { this.empty().append( value ); } return this; }, Function : replaceWith
Replace each element in the set of matched elements with the provided new content
replaceWith: function( value ) { if ( this[0] && this[0].parentNode ) { // Make sure that the elements are removed from the DOM before they are inserted // this can help fix replacing a parent with child elements if ( jQuery.isFunction( value ) ) { return this.each(function(i) { var self = jQuery(this), old = self.html(); self.replaceWith( value.call( this, i, old ) ); }); } if ( typeof value !== "string" ) { value = jQuery(value).detach(); } return this.each(function() { var next = this.nextSibling, parent = this.parentNode; jQuery(this).remove(); if ( next ) { jQuery(next).before( value ); } else { jQuery(parent).append( value ); } }); } else { return this.pushStack( jQuery(jQuery.isFunction(value) ? value() : value), "replaceWith", value ); } }, Function : detach
Remove the set of matched elements from the DOM
detach: function( selector ) { return this.remove( selector, true ); }, Function : domManip
Description
domManip: function( args, table, callback ) { var results, first, value = args[0], scripts = [], fragment, parent; // We can't cloneNode fragments that contain checked, in WebKit if ( !jQuery.support.checkClone && arguments.length === 3 && typeof value === "string" && rchecked.test( value ) ) { return this.each(function() { jQuery(this).domManip( args, table, callback, true ); }); } if ( jQuery.isFunction(value) ) { return this.each(function(i) { var self = jQuery(this); args[0] = value.call(this, i, table ? self.html() : undefined); self.domManip( args, table, callback ); }); } if ( this[0] ) { parent = value && value.parentNode; // If we're in a fragment, just use that instead of building a new one if ( jQuery.support.parentNode && parent && parent.nodeType === 11 && parent.childNodes.length === this.length ) { results = { fragment: parent }; } else { results = buildFragment( args, this, scripts ); } fragment = results.fragment; if ( fragment.childNodes.length === 1 ) { first = fragment = fragment.firstChild; } else { first = fragment.firstChild; } if ( first ) { table = table && jQuery.nodeName( first, "tr" ); for ( var i = 0, l = this.length; i < l; i++ ) { callback.call( table ? root(this[i], first) : this[i], i > 0 || results.cacheable || this.length > 1 ? fragment.cloneNode(true) : fragment ); } } if ( scripts.length ) { jQuery.each( scripts, evalScript ); } } return this; function root( elem, cur ) { return jQuery.nodeName(elem, "table") ? (elem.getElementsByTagName("tbody")[0] || elem.appendChild(elem.ownerDocument.createElement("tbody"))) : elem; } } });
Function : cloneCopyEvent
Internal function
function cloneCopyEvent(orig, ret) { var i = 0; ret.each(function() { if ( this.nodeName !== (orig[i] && orig[i].nodeName) ) { return; } var oldData = jQuery.data( orig[i++] ), curData = jQuery.data( this, oldData ), events = oldData && oldData.events; if ( events ) { delete curData.handle; curData.events = {}; for ( var type in events ) { for ( var handler in events[ type ] ) { jQuery.event.add( this, type, events[ type ][ handler ], events[ type ][ handler ].data ); } } } }); } Function : buildFragment
Internal function
function buildFragment( args, nodes, scripts ) { var fragment, cacheable, cacheresults, doc = (nodes && nodes[0] ? nodes[0].ownerDocument || nodes[0] : document); // Only cache "small" (1/2 KB) strings that are associated with the main document // Cloning options loses the selected state, so don't cache them // IE 6 doesn't like it when you put <object> or <embed> elements in a fragment // Also, WebKit does not clone 'checked' attributes on cloneNode, so don't cache if ( args.length === 1 && typeof args[0] === "string" && args[0].length < 512 && doc === document && !rnocache.test( args[0] ) && (jQuery.support.checkClone || !rchecked.test( args[0] )) ) { cacheable = true; cacheresults = jQuery.fragments[ args[0] ]; if ( cacheresults ) { if ( cacheresults !== 1 ) { fragment = cacheresults; } } } if ( !fragment ) { fragment = doc.createDocumentFragment(); jQuery.clean( args, doc, fragment, scripts ); } if ( cacheable ) { jQuery.fragments[ args[0] ] = cacheresults ? fragment : 1; } return { fragment: fragment, cacheable: cacheable }; } Properties : Fragments cache
jQuery.fragments = {}; Code : Assign manipulation methods
jQuery.each({ appendTo: "append", prependTo: "prepend", insertBefore: "before", insertAfter: "after", replaceAll: "replaceWith" }, function( name, original ) { jQuery.fn[ name ] = function( selector ) { var ret = [], insert = jQuery( selector ), parent = this.length === 1 && this[0].parentNode; if ( parent && parent.nodeType === 11 && parent.childNodes.length === 1 && insert.length === 1 ) { insert[ original ]( this[0] ); return this; } else { for ( var i = 0, l = insert.length; i < l; i++ ) { var elems = (i > 0 ? this.clone(true) : this).get(); jQuery.fn[ original ].apply( jQuery(insert[i]), elems ); ret = ret.concat( elems ); } return this.pushStack( ret, name, insert.selector ); } }; }); Extend : Cleaning
jQuery.extend({ Function : clean
Internal function
clean: function( elems, context, fragment, scripts ) { context = context || document; // !context.createElement fails in IE with an error but returns typeof 'object' if ( typeof context.createElement === "undefined" ) { context = context.ownerDocument || context[0] && context[0].ownerDocument || document; } var ret = []; for ( var i = 0, elem; (elem = elems[i]) != null; i++ ) { if ( typeof elem === "number" ) { elem += ""; } if ( !elem ) { continue; } // Convert html string into DOM nodes if ( typeof elem === "string" && !rhtml.test( elem ) ) { elem = context.createTextNode( elem ); } else if ( typeof elem === "string" ) { // Fix "XHTML"-style tags in all browsers elem = elem.replace(rxhtmlTag, fcloseTag); // Trim whitespace, otherwise indexOf won't work as expected var tag = (rtagName.exec( elem ) || ["", ""])[1].toLowerCase(), wrap = wrapMap[ tag ] || wrapMap._default, depth = wrap[0], div = context.createElement("div"); // Go to html and back, then peel off extra wrappers div.innerHTML = wrap[1] + elem + wrap[2]; // Move to the right depth while ( depth-- ) { div = div.lastChild; } // Remove IE's autoinserted <tbody> from table fragments if ( !jQuery.support.tbody ) { // String was a <table>, *may* have spurious <tbody> var hasBody = rtbody.test(elem), tbody = tag === "table" && !hasBody ? div.firstChild && div.firstChild.childNodes : // String was a bare <thead> or <tfoot> wrap[1] === "<table>" && !hasBody ? div.childNodes : []; for ( var j = tbody.length - 1; j >= 0 ; --j ) { if ( jQuery.nodeName( tbody[ j ], "tbody" ) && !tbody[ j ].childNodes.length ) { tbody[ j ].parentNode.removeChild( tbody[ j ] ); } } } // IE completely kills leading whitespace when innerHTML is used if ( !jQuery.support.leadingWhitespace && rleadingWhitespace.test( elem ) ) { div.insertBefore( context.createTextNode( rleadingWhitespace.exec(elem)[0] ), div.firstChild ); } elem = div.childNodes; } if ( elem.nodeType ) { ret.push( elem ); } else { ret = jQuery.merge( ret, elem ); } } if ( fragment ) { for ( var i = 0; ret[i]; i++ ) { if ( scripts && jQuery.nodeName( ret[i], "script" ) && (!ret[i].type || ret[i].type.toLowerCase() === "text/javascript") ) { scripts.push( ret[i].parentNode ? ret[i].parentNode.removeChild( ret[i] ) : ret[i] ); } else { if ( ret[i].nodeType === 1 ) { ret.splice.apply( ret, [i + 1, 0].concat(jQuery.makeArray(ret[i].getElementsByTagName("script"))) ); } fragment.appendChild( ret[i] ); } } } return ret; }, Function : cleanData
Internal function
cleanData: function( elems ) { var data, id, cache = jQuery.cache, special = jQuery.event.special, deleteExpando = jQuery.support.deleteExpando; for ( var i = 0, elem; (elem = elems[i]) != null; i++ ) { id = elem[ jQuery.expando ]; if ( id ) { data = cache[ id ]; if ( data.events ) { for ( var type in data.events ) { if ( special[ type ] ) { jQuery.event.remove( elem, type ); } else { removeEvent( elem, type, data.handle ); } } } if ( deleteExpando ) { delete elem[ jQuery.expando ]; } else if ( elem.removeAttribute ) { elem.removeAttribute( jQuery.expando ); } delete cache[ id ]; } } } });
Section : CSS
Properties : regular expressions etc
// exclude the following css properties to add px var rexclude = /z-?index|font-?weight|opacity|zoom|line-?height/i, ralpha = /alpha\([^)]*\)/, ropacity = /opacity=([^)]*)/, rfloat = /float/i, rdashAlpha = /-([a-z])/ig, rupper = /([A-Z])/g, rnumpx = /^-?\d+(?:px)?$/i, rnum = /^-?\d/, cssShow = { position: "absolute", visibility: "hidden", display:"block" }, cssWidth = [ "Left", "Right" ], cssHeight = [ "Top", "Bottom" ], // cache check for defaultView.getComputedStyle getComputedStyle = document.defaultView && document.defaultView.getComputedStyle, // normalize float css property styleFloat = jQuery.support.cssFloat ? "cssFloat" : "styleFloat", fcamelCase = function( all, letter ) { return letter.toUpperCase(); }; Function : css
Get the value of a style property for the first element in the set of matched elements
jQuery.fn.css = function( name, value ) { return access( this, name, value, true, function( elem, name, value ) { if ( value === undefined ) { return jQuery.curCSS( elem, name ); } if ( typeof value === "number" && !rexclude.test(name) ) { value += "px"; } jQuery.style( elem, name, value ); }); }; Extend : CSS
jQuery.extend({ Function : style
Internal function
style: function( elem, name, value ) { // don't set styles on text and comment nodes if ( !elem || elem.nodeType === 3 || elem.nodeType === 8 ) { return undefined; } // ignore negative width and height values #1599 if ( (name === "width" || name === "height") && parseFloat(value) < 0 ) { value = undefined; } var style = elem.style || elem, set = value !== undefined; // IE uses filters for opacity if ( !jQuery.support.opacity && name === "opacity" ) { if ( set ) { // IE has trouble with opacity if it does not have layout // Force it by setting the zoom level style.zoom = 1; // Set the alpha filter to set the opacity var opacity = parseInt( value, 10 ) + "" === "NaN" ? "" : "alpha(opacity=" + value * 100 + ")"; var filter = style.filter || jQuery.curCSS( elem, "filter" ) || ""; style.filter = ralpha.test(filter) ? filter.replace(ralpha, opacity) : opacity; } return style.filter && style.filter.indexOf("opacity=") >= 0 ? (parseFloat( ropacity.exec(style.filter)[1] ) / 100) + "": ""; } // Make sure we're using the right name for getting the float value if ( rfloat.test( name ) ) { name = styleFloat; } name = name.replace(rdashAlpha, fcamelCase); if ( set ) { style[ name ] = value; } return style[ name ]; }, Function : css
Get the value of a style property for the first element in the set of matched elements
css: function( elem, name, force, extra ) { if ( name === "width" || name === "height" ) { var val, props = cssShow, which = name === "width" ? cssWidth : cssHeight; function getWH() { val = name === "width" ? elem.offsetWidth : elem.offsetHeight; if ( extra === "border" ) { return; } jQuery.each( which, function() { if ( !extra ) { val -= parseFloat(jQuery.curCSS( elem, "padding" + this, true)) || 0; } if ( extra === "margin" ) { val += parseFloat(jQuery.curCSS( elem, "margin" + this, true)) || 0; } else { val -= parseFloat(jQuery.curCSS( elem, "border" + this + "Width", true)) || 0; } }); } if ( elem.offsetWidth !== 0 ) { getWH(); } else { jQuery.swap( elem, props, getWH ); } return Math.max(0, Math.round(val)); } return jQuery.curCSS( elem, name, force ); }, Function : curCSS
Internal function
curCSS: function( elem, name, force ) { var ret, style = elem.style, filter; // IE uses filters for opacity if ( !jQuery.support.opacity && name === "opacity" && elem.currentStyle ) { ret = ropacity.test(elem.currentStyle.filter || "") ? (parseFloat(RegExp.$1) / 100) + "" : ""; return ret === "" ? "1" : ret; } // Make sure we're using the right name for getting the float value if ( rfloat.test( name ) ) { name = styleFloat; } if ( !force && style && style[ name ] ) { ret = style[ name ]; } else if ( getComputedStyle ) { // Only "float" is needed here if ( rfloat.test( name ) ) { name = "float"; } name = name.replace( rupper, "-$1" ).toLowerCase(); var defaultView = elem.ownerDocument.defaultView; if ( !defaultView ) { return null; } var computedStyle = defaultView.getComputedStyle( elem, null ); if ( computedStyle ) { ret = computedStyle.getPropertyValue( name ); } // We should always get a number back from opacity if ( name === "opacity" && ret === "" ) { ret = "1"; } } else if ( elem.currentStyle ) { var camelCase = name.replace(rdashAlpha, fcamelCase); ret = elem.currentStyle[ name ] || elem.currentStyle[ camelCase ]; // From the awesome hack by Dean Edwards // http://erik.eae.net/archives/2007/07/27/18.54.15/#comment-102291 // If we're not dealing with a regular pixel number // but a number that has a weird ending, we need to convert it to pixels if ( !rnumpx.test( ret ) && rnum.test( ret ) ) { // Remember the original values var left = style.left, rsLeft = elem.runtimeStyle.left; // Put in the new values to get a computed value out elem.runtimeStyle.left = elem.currentStyle.left; style.left = camelCase === "fontSize" ? "1em" : (ret || 0); ret = style.pixelLeft + "px"; // Revert the changed values style.left = left; elem.runtimeStyle.left = rsLeft; } } return ret; }, Function : swap
Internal function
// A method for quickly swapping in/out CSS properties to get correct calculations swap: function( elem, options, callback ) { var old = {}; // Remember the old values, and insert the new ones for ( var name in options ) { old[ name ] = elem.style[ name ]; elem.style[ name ] = options[ name ]; } callback.call( elem ); // Revert the old values for ( var name in options ) { elem.style[ name ] = old[ name ]; } } });
Code : visible and hidden filters
if ( jQuery.expr && jQuery.expr.filters ) { jQuery.expr.filters.hidden = function( elem ) { var width = elem.offsetWidth, height = elem.offsetHeight, skip = elem.nodeName.toLowerCase() === "tr"; return width === 0 && height === 0 && !skip ? true : width > 0 && height > 0 && !skip ? false : jQuery.curCSS(elem, "display") === "none"; }; jQuery.expr.filters.visible = function( elem ) { return !jQuery.expr.filters.hidden( elem ); }; } Section : AJAX
Properties : Regular expressions
var jsc = now(), rscript = /<script(.|\s)*?\/script>/gi, rselectTextarea = /select|textarea/i, rinput = /color|date|datetime|email|hidden|month|number|password|range|search|tel|text|time|url|week/i, jsre = /=\?(&|$)/, rquery = /\?/, rts = /(\?|&)_=.*?(&|$)/, rurl = /^(\w+:)?\/\/([^\/?#]+)/, r20 = /%20/g, // Keep a copy of the old load method _load = jQuery.fn.load;
Extend : Loading and saving
jQuery.fn.extend({ Function : load
Load data from the server and place the returned HTML into the matched element
load: function( url, params, callback ) { if ( typeof url !== "string" ) { return _load.call( this, url ); // Don't do a request if no elements are being requested } else if ( !this.length ) { return this; } var off = url.indexOf(" "); if ( off >= 0 ) { var selector = url.slice(off, url.length); url = url.slice(0, off); } // Default to a GET request var type = "GET"; // If the second parameter was provided if ( params ) { // If it's a function if ( jQuery.isFunction( params ) ) { // We assume that it's the callback callback = params; params = null; // Otherwise, build a param string } else if ( typeof params === "object" ) { params = jQuery.param( params, jQuery.ajaxSettings.traditional ); type = "POST"; } } var self = this; // Request the remote document jQuery.ajax({ url: url, type: type, dataType: "html", data: params, complete: function( res, status ) { // If successful, inject the HTML into all the matched elements if ( status === "success" || status === "notmodified" ) { // See if a selector was specified self.html( selector ? // Create a dummy div to hold the results jQuery("<div />") // inject the contents of the document in, removing the scripts // to avoid any 'Permission Denied' errors in IE .append(res.responseText.replace(rscript, "")) // Locate the specified elements .find(selector) : // If not, just inject the full result res.responseText ); } if ( callback ) { self.each( callback, [res.responseText, status, res] ); } } }); return this; }, Function : serialize
Encode a set of form elements as a string for submission
serialize: function() { return jQuery.param(this.serializeArray()); }, Function : serializeArray
Encode a set of form elements as an array of names and values
serializeArray: function() { return this.map(function() { return this.elements ? jQuery.makeArray(this.elements) : this; }) .filter(function() { return this.name && !this.disabled && (this.checked || rselectTextarea.test(this.nodeName) || rinput.test(this.type)); }) .map(function( i, elem ) { var val = jQuery(this).val(); return val == null ? null : jQuery.isArray(val) ? jQuery.map( val, function( val, i ) { return { name: elem.name, value: val }; }) : { name: elem.name, value: val }; }).get(); } });
Code : attach ajax functions
// Attach a bunch of functions for handling common AJAX events jQuery.each( "ajaxStart ajaxStop ajaxComplete ajaxError ajaxSuccess ajaxSend".split(" "), function( i, o ) { jQuery.fn[o] = function( f ) { return this.bind(o, f); }; }); Extend : AJAX
jQuery.extend({ Function : get
Retrieve the DOM elements matched by the jQuery object
get: function( url, data, callback, type ) { // shift arguments if data argument was omited if ( jQuery.isFunction( data ) ) { type = type || callback; callback = data; data = null; } return jQuery.ajax({ type: "GET", url: url, data: data, success: callback, dataType: type }); }, Function : getScript
Internal function
getScript: function( url, callback ) { return jQuery.get(url, null, callback, "script"); }, Function : getJSON
Internal function
getJSON: function( url, data, callback ) { return jQuery.get(url, data, callback, "json"); }, Function : post
Load data from the server using a HTTP POST request
post: function( url, data, callback, type ) { // shift arguments if data argument was omited if ( jQuery.isFunction( data ) ) { type = type || callback; callback = data; data = {}; } return jQuery.ajax({ type: "POST", url: url, data: data, success: callback, dataType: type }); }, Function : ajaxSetup
Set default values for future Ajax requests
ajaxSetup: function( settings ) { jQuery.extend( jQuery.ajaxSettings, settings ); }, Function : ajaxSettings
Internal function
ajaxSettings: { url: location.href, global: true, type: "GET", contentType: "application/x-www-form-urlencoded", processData: true, async: true, /* timeout: 0, data: null, username: null, password: null, traditional: false, */ // Create the request object; Microsoft failed to properly // implement the XMLHttpRequest in IE7 (can't request local files), // so we use the ActiveXObject when it is available // This function can be overriden by calling jQuery.ajaxSetup xhr: window.XMLHttpRequest && (window.location.protocol !== "file:" || !window.ActiveXObject) ? function() { return new window.XMLHttpRequest(); } : function() { try { return new window.ActiveXObject("Microsoft.XMLHTTP"); } catch(e) {} }, accepts: { xml: "application/xml, text/xml", html: "text/html", script: "text/javascript, application/javascript", json: "application/json, text/javascript", text: "text/plain", _default: "*/*" } }, Function : ajax
Perform an asynchronous HTTP (Ajax) request
ajax: function( origSettings ) { var s = jQuery.extend(true, {}, jQuery.ajaxSettings, origSettings); var jsonp, status, data, callbackContext = origSettings && origSettings.context || s, type = s.type.toUpperCase(); // convert data if not already a string if ( s.data && s.processData && typeof s.data !== "string" ) { s.data = jQuery.param( s.data, s.traditional ); } // Handle JSONP Parameter Callbacks if ( s.dataType === "jsonp" ) { if ( type === "GET" ) { if ( !jsre.test( s.url ) ) { s.url += (rquery.test( s.url ) ? "&" : "?") + (s.jsonp || "callback") + "=?"; } } else if ( !s.data || !jsre.test(s.data) ) { s.data = (s.data ? s.data + "&" : "") + (s.jsonp || "callback") + "=?"; } s.dataType = "json"; } // Build temporary JSONP function if ( s.dataType === "json" && (s.data && jsre.test(s.data) || jsre.test(s.url)) ) { jsonp = s.jsonpCallback || ("jsonp" + jsc++); // Replace the =? sequence both in the query string and the data if ( s.data ) { s.data = (s.data + "").replace(jsre, "=" + jsonp + "$1"); } s.url = s.url.replace(jsre, "=" + jsonp + "$1"); // We need to make sure // that a JSONP style response is executed properly s.dataType = "script"; // Handle JSONP-style loading window[ jsonp ] = window[ jsonp ] || function( tmp ) { data = tmp; success(); complete(); // Garbage collect window[ jsonp ] = undefined; try { delete window[ jsonp ]; } catch(e) {} if ( head ) { head.removeChild( script ); } }; } if ( s.dataType === "script" && s.cache === null ) { s.cache = false; } if ( s.cache === false && type === "GET" ) { var ts = now(); // try replacing _= if it is there var ret = s.url.replace(rts, "$1_=" + ts + "$2"); // if nothing was replaced, add timestamp to the end s.url = ret + ((ret === s.url) ? (rquery.test(s.url) ? "&" : "?") + "_=" + ts : ""); } // If data is available, append data to url for get requests if ( s.data && type === "GET" ) { s.url += (rquery.test(s.url) ? "&" : "?") + s.data; } // Watch for a new set of requests if ( s.global && ! jQuery.active++ ) { jQuery.event.trigger( "ajaxStart" ); } // Matches an absolute URL, and saves the domain var parts = rurl.exec( s.url ), remote = parts && (parts[1] && parts[1] !== location.protocol || parts[2] !== location.host); // If we're requesting a remote document // and trying to load JSON or Script with a GET if ( s.dataType === "script" && type === "GET" && remote ) { var head = document.getElementsByTagName("head")[0] || document.documentElement; var script = document.createElement("script"); script.src = s.url; if ( s.scriptCharset ) { script.charset = s.scriptCharset; } // Handle Script loading if ( !jsonp ) { var done = false; // Attach handlers for all browsers script.onload = script.onreadystatechange = function() { if ( !done && (!this.readyState || this.readyState === "loaded" || this.readyState === "complete") ) { done = true; success(); complete(); // Handle memory leak in IE script.onload = script.onreadystatechange = null; if ( head && script.parentNode ) { head.removeChild( script ); } } }; } // Use insertBefore instead of appendChild to circumvent an IE6 bug. // This arises when a base node is used (#2709 and #4378). head.insertBefore( script, head.firstChild ); // We handle everything using the script element injection return undefined; } var requestDone = false; // Create the request object var xhr = s.xhr(); if ( !xhr ) { return; } // Open the socket // Passing null username, generates a login popup on Opera (#2865) if ( s.username ) { xhr.open(type, s.url, s.async, s.username, s.password); } else { xhr.open(type, s.url, s.async); } // Need an extra try/catch for cross domain requests in Firefox 3 try { // Set the correct header, if data is being sent if ( s.data || origSettings && origSettings.contentType ) { xhr.setRequestHeader("Content-Type", s.contentType); } // Set the If-Modified-Since and/or If-None-Match header, if in ifModified mode. if ( s.ifModified ) { if ( jQuery.lastModified[s.url] ) { xhr.setRequestHeader("If-Modified-Since", jQuery.lastModified[s.url]); } if ( jQuery.etag[s.url] ) { xhr.setRequestHeader("If-None-Match", jQuery.etag[s.url]); } } // Set header so the called script knows that it's an XMLHttpRequest // Only send the header if it's not a remote XHR if ( !remote ) { xhr.setRequestHeader("X-Requested-With", "XMLHttpRequest"); } // Set the Accepts header for the server, depending on the dataType xhr.setRequestHeader("Accept", s.dataType && s.accepts[ s.dataType ] ? s.accepts[ s.dataType ] + ", */*" : s.accepts._default ); } catch(e) {} // Allow custom headers/mimetypes and early abort if ( s.beforeSend && s.beforeSend.call(callbackContext, xhr, s) === false ) { // Handle the global AJAX counter if ( s.global && ! --jQuery.active ) { jQuery.event.trigger( "ajaxStop" ); } // close opended socket xhr.abort(); return false; } if ( s.global ) { trigger("ajaxSend", [xhr, s]); } // Wait for a response to come back var onreadystatechange = xhr.onreadystatechange = function( isTimeout ) { // The request was aborted if ( !xhr || xhr.readyState === 0 || isTimeout === "abort" ) { // Opera doesn't call onreadystatechange before this point // so we simulate the call if ( !requestDone ) { complete(); } requestDone = true; if ( xhr ) { xhr.onreadystatechange = jQuery.noop; } // The transfer is complete and the data is available, or the request timed out } else if ( !requestDone && xhr && (xhr.readyState === 4 || isTimeout === "timeout") ) { requestDone = true; xhr.onreadystatechange = jQuery.noop; status = isTimeout === "timeout" ? "timeout" : !jQuery.httpSuccess( xhr ) ? "error" : s.ifModified && jQuery.httpNotModified( xhr, s.url ) ? "notmodified" : "success"; var errMsg; if ( status === "success" ) { // Watch for, and catch, XML document parse errors try { // process the data (runs the xml through httpData regardless of callback) data = jQuery.httpData( xhr, s.dataType, s ); } catch(err) { status = "parsererror"; errMsg = err; } } // Make sure that the request was successful or notmodified if ( status === "success" || status === "notmodified" ) { // JSONP handles its own success callback if ( !jsonp ) { success(); } } else { jQuery.handleError(s, xhr, status, errMsg); } // Fire the complete handlers complete(); if ( isTimeout === "timeout" ) { xhr.abort(); } // Stop memory leaks if ( s.async ) { xhr = null; } } }; // Override the abort handler, if we can (IE doesn't allow it, but that's OK) // Opera doesn't fire onreadystatechange at all on abort try { var oldAbort = xhr.abort; xhr.abort = function() { if ( xhr ) { oldAbort.call( xhr ); } onreadystatechange( "abort" ); }; } catch(e) { } // Timeout checker if ( s.async && s.timeout > 0 ) { setTimeout(function() { // Check to see if the request is still happening if ( xhr && !requestDone ) { onreadystatechange( "timeout" ); } }, s.timeout); } // Send the data try { xhr.send( type === "POST" || type === "PUT" || type === "DELETE" ? s.data : null ); } catch(e) { jQuery.handleError(s, xhr, null, e); // Fire the complete handlers complete(); } // firefox 1.5 doesn't fire statechange for sync requests if ( !s.async ) { onreadystatechange(); } function success() { // If a local callback was specified, fire it and pass it the data if ( s.success ) { s.success.call( callbackContext, data, status, xhr ); } // Fire the global callback if ( s.global ) { trigger( "ajaxSuccess", [xhr, s] ); } } function complete() { // Process result if ( s.complete ) { s.complete.call( callbackContext, xhr, status); } // The request was completed if ( s.global ) { trigger( "ajaxComplete", [xhr, s] ); } // Handle the global AJAX counter if ( s.global && ! --jQuery.active ) { jQuery.event.trigger( "ajaxStop" ); } } function trigger(type, args) { (s.context ? jQuery(s.context) : jQuery.event).trigger(type, args); } // return XMLHttpRequest to allow aborting the request etc. return xhr; }, Function : handleError
Internal function
handleError: function( s, xhr, status, e ) { // If a local callback was specified, fire it if ( s.error ) { s.error.call( s.context || s, xhr, status, e ); } // Fire the global callback if ( s.global ) { (s.context ? jQuery(s.context) : jQuery.event).trigger( "ajaxError", [xhr, s, e] ); } }, Properties : active
// Counter for holding the number of active queries active: 0,
Function : httpSuccess
Determines if an XMLHttpRequest was successful or not
// Determines if an XMLHttpRequest was successful or not httpSuccess: function( xhr ) { try { // IE error sometimes returns 1223 when it should be 204 so treat it as success, see #1450 return !xhr.status && location.protocol === "file:" || // Opera returns 0 when status is 304 ( xhr.status >= 200 && xhr.status < 300 ) || xhr.status === 304 || xhr.status === 1223 || xhr.status === 0; } catch(e) {} return false; }, Function : httpNotModified
Determines if an XMLHttpRequest returns NotModified
// Determines if an XMLHttpRequest returns NotModified httpNotModified: function( xhr, url ) { var lastModified = xhr.getResponseHeader("Last-Modified"), etag = xhr.getResponseHeader("Etag"); if ( lastModified ) { jQuery.lastModified[url] = lastModified; } if ( etag ) { jQuery.etag[url] = etag; } // Opera returns 0 when status is 304 return xhr.status === 304 || xhr.status === 0; }, Function : httpData
Internal function
httpData: function( xhr, type, s ) { var ct = xhr.getResponseHeader("content-type") || "", xml = type === "xml" || !type && ct.indexOf("xml") >= 0, data = xml ? xhr.responseXML : xhr.responseText; if ( xml && data.documentElement.nodeName === "parsererror" ) { jQuery.error( "parsererror" ); } // Allow a pre-filtering function to sanitize the response // s is checked to keep backwards compatibility if ( s && s.dataFilter ) { data = s.dataFilter( data, type ); } // The filter can actually parse the response if ( typeof data === "string" ) { // Get the JavaScript object, if JSON is used. if ( type === "json" || !type && ct.indexOf("json") >= 0 ) { data = jQuery.parseJSON( data ); // If the type is "script", eval it in global context } else if ( type === "script" || !type && ct.indexOf("javascript") >= 0 ) { jQuery.globalEval( data ); } } return data; }, Function : param
Create a serialized representation of an array or object, suitable for use in a URL query string or Ajax request
// Serialize an array of form elements or a set of // key/values into a query string param: function( a, traditional ) { var s = []; // Set traditional to true for jQuery <= 1.3.2 behavior. if ( traditional === undefined ) { traditional = jQuery.ajaxSettings.traditional; } // If an array was passed in, assume that it is an array of form elements. if ( jQuery.isArray(a) || a.jquery ) { // Serialize the form elements jQuery.each( a, function() { add( this.name, this.value ); }); } else { // If traditional, encode the "old" way (the way 1.3.2 or older // did it), otherwise encode params recursively. for ( var prefix in a ) { buildParams( prefix, a[prefix] ); } } // Return the resulting serialization return s.join("&").replace(r20, "+"); function buildParams( prefix, obj ) { if ( jQuery.isArray(obj) ) { // Serialize array item. jQuery.each( obj, function( i, v ) { if ( traditional || /\[\]$/.test( prefix ) ) { // Treat each array item as a scalar. add( prefix, v ); } else { // If array item is non-scalar (array or object), encode its // numeric index to resolve deserialization ambiguity issues. // Note that rack (as of 1.0.0) can't currently deserialize // nested arrays properly, and attempting to do so may cause // a server error. Possible fixes are to modify rack's // deserialization algorithm or to provide an option or flag // to force array serialization to be shallow. buildParams( prefix + "[" + ( typeof v === "object" || jQuery.isArray(v) ? i : "" ) + "]", v ); } }); } else if ( !traditional && obj != null && typeof obj === "object" ) { // Serialize object item. jQuery.each( obj, function( k, v ) { buildParams( prefix + "[" + k + "]", v ); }); } else { // Serialize scalar item. add( prefix, obj ); } } function add( key, value ) { // If value is a function, invoke it and return its value value = jQuery.isFunction(value) ? value() : value; s[ s.length ] = encodeURIComponent(key) + "=" + encodeURIComponent(value); } } });
Section : Effects
Properties : Regular expressions and attributes
var elemdisplay = {}, rfxtypes = /toggle|show|hide/, rfxnum = /^([+-]=)?([\d+-.]+)(.*)$/, timerId, fxAttrs = [ // height animations [ "height", "marginTop", "marginBottom", "paddingTop", "paddingBottom" ], // width animations [ "width", "marginLeft", "marginRight", "paddingLeft", "paddingRight" ], // opacity animations [ "opacity" ] ]; Extend : Effects
jQuery.fn.extend({ Function : show
Display the matched elements
show: function( speed, callback ) { if ( speed || speed === 0) { return this.animate( genFx("show", 3), speed, callback); } else { for ( var i = 0, l = this.length; i < l; i++ ) { var old = jQuery.data(this[i], "olddisplay"); this[i].style.display = old || ""; if ( jQuery.css(this[i], "display") === "none" ) { var nodeName = this[i].nodeName, display; if ( elemdisplay[ nodeName ] ) { display = elemdisplay[ nodeName ]; } else { var elem = jQuery("<" + nodeName + " />").appendTo("body"); display = elem.css("display"); if ( display === "none" ) { display = "block"; } elem.remove(); elemdisplay[ nodeName ] = display; } jQuery.data(this[i], "olddisplay", display); } } // Set the display of the elements in a second loop // to avoid the constant reflow for ( var j = 0, k = this.length; j < k; j++ ) { this[j].style.display = jQuery.data(this[j], "olddisplay") || ""; } return this; } }, Function : hide
Hide the matched elements
hide: function( speed, callback ) { if ( speed || speed === 0 ) { return this.animate( genFx("hide", 3), speed, callback); } else { for ( var i = 0, l = this.length; i < l; i++ ) { var old = jQuery.data(this[i], "olddisplay"); if ( !old && old !== "none" ) { jQuery.data(this[i], "olddisplay", jQuery.css(this[i], "display")); } } // Set the display of the elements in a second loop // to avoid the constant reflow for ( var j = 0, k = this.length; j < k; j++ ) { this[j].style.display = "none"; } return this; } }, Function : toggle
Bind two or more handlers to the matched elements, to be executed on alternate clicks
// Save the old toggle function _toggle: jQuery.fn.toggle, toggle: function( fn, fn2 ) { var bool = typeof fn === "boolean"; if ( jQuery.isFunction(fn) && jQuery.isFunction(fn2) ) { this._toggle.apply( this, arguments ); } else if ( fn == null || bool ) { this.each(function() { var state = bool ? fn : jQuery(this).is(":hidden"); jQuery(this)[ state ? "show" : "hide" ](); }); } else { this.animate(genFx("toggle", 3), fn, fn2); } return this; }, Function : fadeTo
Adjust the opacity of the matched elements
fadeTo: function( speed, to, callback ) { return this.filter(":hidden").css("opacity", 0).show().end() .animate({opacity: to}, speed, callback); }, Function : animate
Perform a custom animation of a set of CSS properties
animate: function( prop, speed, easing, callback ) { var optall = jQuery.speed(speed, easing, callback); if ( jQuery.isEmptyObject( prop ) ) { return this.each( optall.complete ); } return this[ optall.queue === false ? "each" : "queue" ](function() { var opt = jQuery.extend({}, optall), p, hidden = this.nodeType === 1 && jQuery(this).is(":hidden"), self = this; for ( p in prop ) { var name = p.replace(rdashAlpha, fcamelCase); if ( p !== name ) { prop[ name ] = prop[ p ]; delete prop[ p ]; p = name; } if ( prop[p] === "hide" && hidden || prop[p] === "show" && !hidden ) { return opt.complete.call(this); } if ( ( p === "height" || p === "width" ) && this.style ) { // Store display property opt.display = jQuery.css(this, "display"); // Make sure that nothing sneaks out opt.overflow = this.style.overflow; } if ( jQuery.isArray( prop[p] ) ) { // Create (if needed) and add to specialEasing (opt.specialEasing = opt.specialEasing || {})[p] = prop[p][1]; prop[p] = prop[p][0]; } } if ( opt.overflow != null ) { this.style.overflow = "hidden"; } opt.curAnim = jQuery.extend({}, prop); jQuery.each( prop, function( name, val ) { var e = new jQuery.fx( self, opt, name ); if ( rfxtypes.test(val) ) { e[ val === "toggle" ? hidden ? "show" : "hide" : val ]( prop ); } else { var parts = rfxnum.exec(val), start = e.cur(true) || 0; if ( parts ) { var end = parseFloat( parts[2] ), unit = parts[3] || "px"; // We need to compute starting value if ( unit !== "px" ) { self.style[ name ] = (end || 1) + unit; start = ((end || 1) / e.cur(true)) * start; self.style[ name ] = start + unit; } // If a +=/-= token was provided, we're doing a relative animation if ( parts[1] ) { end = ((parts[1] === "-=" ? -1 : 1) * end) + start; } e.custom( start, end, unit ); } else { e.custom( start, val, "" ); } } }); // For JS strict compliance return true; }); }, Function : stop
Stop the currently-running animation on the matched elements
stop: function( clearQueue, gotoEnd ) { var timers = jQuery.timers; if ( clearQueue ) { this.queue([]); } this.each(function() { // go in reverse order so anything added to the queue during the loop is ignored for ( var i = timers.length - 1; i >= 0; i-- ) { if ( timers[i].elem === this ) { if (gotoEnd) { // force the next step to be the last timers[i](true); } timers.splice(i, 1); } } }); // start the next in the queue if the last step wasn't forced if ( !gotoEnd ) { this.dequeue(); } return this; } });
Code : Generate shortcuts for custom animations
// Generate shortcuts for custom animations jQuery.each({ slideDown: genFx("show", 1), slideUp: genFx("hide", 1), slideToggle: genFx("toggle", 1), fadeIn: { opacity: "show" }, fadeOut: { opacity: "hide" } }, function( name, props ) { jQuery.fn[ name ] = function( speed, callback ) { return this.animate( props, speed, callback ); }; }); Extend : Animation utility functions
jQuery.extend({ Function : speed
Internal function
speed: function( speed, easing, fn ) { var opt = speed && typeof speed === "object" ? speed : { complete: fn || !fn && easing || jQuery.isFunction( speed ) && speed, duration: speed, easing: fn && easing || easing && !jQuery.isFunction(easing) && easing }; opt.duration = jQuery.fx.off ? 0 : typeof opt.duration === "number" ? opt.duration : jQuery.fx.speeds[opt.duration] || jQuery.fx.speeds._default; // Queueing opt.old = opt.complete; opt.complete = function() { if ( opt.queue !== false ) { jQuery(this).dequeue(); } if ( jQuery.isFunction( opt.old ) ) { opt.old.call( this ); } }; return opt; }, FUNCTIONS : linear & swing
Internal function
easing: { linear: function( p, n, firstNum, diff ) { return firstNum + diff * p; }, swing: function( p, n, firstNum, diff ) { return ((-Math.cos(p*Math.PI)/2) + 0.5) * diff + firstNum; } }, Properties : timers
timers: [],
Function : fx
Internal function
fx: function( elem, options, prop ) { this.options = options; this.elem = elem; this.prop = prop; if ( !options.orig ) { options.orig = {}; } } });
Object : jQuery.fx.prototype
jQuery.fx.prototype = { Function : update
Internal function
// Simple function for setting a style value update: function() { if ( this.options.step ) { this.options.step.call( this.elem, this.now, this ); } (jQuery.fx.step[this.prop] || jQuery.fx.step._default)( this ); // Set display property to block for height/width animations if ( ( this.prop === "height" || this.prop === "width" ) && this.elem.style ) { this.elem.style.display = "block"; } }, Function : cur
Internal function
// Get the current size cur: function( force ) { if ( this.elem[this.prop] != null && (!this.elem.style || this.elem.style[this.prop] == null) ) { return this.elem[ this.prop ]; } var r = parseFloat(jQuery.css(this.elem, this.prop, force)); return r && r > -10000 ? r : parseFloat(jQuery.curCSS(this.elem, this.prop)) || 0; }, Function : custom
Internal function
// Start an animation from one number to another custom: function( from, to, unit ) { this.startTime = now(); this.start = from; this.end = to; this.unit = unit || this.unit || "px"; this.now = this.start; this.pos = this.state = 0; var self = this; function t( gotoEnd ) { return self.step(gotoEnd); } t.elem = this.elem; if ( t() && jQuery.timers.push(t) && !timerId ) { timerId = setInterval(jQuery.fx.tick, 13); } }, Function : show
Internal function
// Simple 'show' function show: function() { // Remember where we started, so that we can go back to it later this.options.orig[this.prop] = jQuery.style( this.elem, this.prop ); this.options.show = true; // Begin the animation // Make sure that we start at a small width/height to avoid any // flash of content this.custom(this.prop === "width" || this.prop === "height" ? 1 : 0, this.cur()); // Start by showing the element jQuery( this.elem ).show(); }, Function : hide
Internal function
// Simple 'hide' function hide: function() { // Remember where we started, so that we can go back to it later this.options.orig[this.prop] = jQuery.style( this.elem, this.prop ); this.options.hide = true; // Begin the animation this.custom(this.cur(), 0); }, Function : step
Internal function
// Each step of an animation step: function( gotoEnd ) { var t = now(), done = true; if ( gotoEnd || t >= this.options.duration + this.startTime ) { this.now = this.end; this.pos = this.state = 1; this.update(); this.options.curAnim[ this.prop ] = true; for ( var i in this.options.curAnim ) { if ( this.options.curAnim[i] !== true ) { done = false; } } if ( done ) { if ( this.options.display != null ) { // Reset the overflow this.elem.style.overflow = this.options.overflow; // Reset the display var old = jQuery.data(this.elem, "olddisplay"); this.elem.style.display = old ? old : this.options.display; if ( jQuery.css(this.elem, "display") === "none" ) { this.elem.style.display = "block"; } } // Hide the element if the "hide" operation was done if ( this.options.hide ) { jQuery(this.elem).hide(); } // Reset the properties, if the item has been hidden or shown if ( this.options.hide || this.options.show ) { for ( var p in this.options.curAnim ) { jQuery.style(this.elem, p, this.options.orig[p]); } } // Execute the complete function this.options.complete.call( this.elem ); } return false; } else { var n = t - this.startTime; this.state = n / this.options.duration; // Perform the easing function, defaults to swing var specialEasing = this.options.specialEasing && this.options.specialEasing[this.prop]; var defaultEasing = this.options.easing || (jQuery.easing.swing ? "swing" : "linear"); this.pos = jQuery.easing[specialEasing || defaultEasing](this.state, n, 0, 1, this.options.duration); this.now = this.start + ((this.end - this.start) * this.pos); // Perform the next step of the animation this.update(); } return true; } };
Extend : jQuery.fx
jQuery.extend( jQuery.fx, { Function : tick
Internal function
tick: function() { var timers = jQuery.timers; for ( var i = 0; i < timers.length; i++ ) { if ( !timers[i]() ) { timers.splice(i--, 1); } } if ( !timers.length ) { jQuery.fx.stop(); } }, Function : opacity
Internal function
step: { opacity: function( fx ) { jQuery.style(fx.elem, "opacity", fx.now); }, _default: function( fx ) { if ( fx.elem.style && fx.elem.style[ fx.prop ] != null ) { fx.elem.style[ fx.prop ] = (fx.prop === "width" || fx.prop === "height" ? Math.max(0, fx.now) : fx.now) + fx.unit; } else { fx.elem[ fx.prop ] = fx.now; } } } });
Code : jQuery.expr.filters.animated
if ( jQuery.expr && jQuery.expr.filters ) { jQuery.expr.filters.animated = function( elem ) { return jQuery.grep(jQuery.timers, function( fn ) { return elem === fn.elem; }).length; }; } Function : genFx
Internal function function genFx( type, num ) { var obj = {}; jQuery.each( fxAttrs.concat.apply([], fxAttrs.slice(0,num)), function() { obj[ this ] = type; }); return obj; } Section : Dimensions
Code : top, left, offset, etc
if ( "getBoundingClientRect" in document.documentElement ) { jQuery.fn.offset = function( options ) { var elem = this[0]; if ( options ) { return this.each(function( i ) { jQuery.offset.setOffset( this, options, i ); }); } if ( !elem || !elem.ownerDocument ) { return null; } if ( elem === elem.ownerDocument.body ) { return jQuery.offset.bodyOffset( elem ); } var box = elem.getBoundingClientRect(), doc = elem.ownerDocument, body = doc.body, docElem = doc.documentElement, clientTop = docElem.clientTop || body.clientTop || 0, clientLeft = docElem.clientLeft || body.clientLeft || 0, top = box.top + (self.pageYOffset || jQuery.support.boxModel && docElem.scrollTop || body.scrollTop ) - clientTop, left = box.left + (self.pageXOffset || jQuery.support.boxModel && docElem.scrollLeft || body.scrollLeft) - clientLeft; return { top: top, left: left }; }; } else { jQuery.fn.offset = function( options ) { var elem = this[0]; if ( options ) { return this.each(function( i ) { jQuery.offset.setOffset( this, options, i ); }); } if ( !elem || !elem.ownerDocument ) { return null; } if ( elem === elem.ownerDocument.body ) { return jQuery.offset.bodyOffset( elem ); } jQuery.offset.initialize(); var offsetParent = elem.offsetParent, prevOffsetParent = elem, doc = elem.ownerDocument, computedStyle, docElem = doc.documentElement, body = doc.body, defaultView = doc.defaultView, prevComputedStyle = defaultView ? defaultView.getComputedStyle( elem, null ) : elem.currentStyle, top = elem.offsetTop, left = elem.offsetLeft; while ( (elem = elem.parentNode) && elem !== body && elem !== docElem ) { if ( jQuery.offset.supportsFixedPosition && prevComputedStyle.position === "fixed" ) { break; } computedStyle = defaultView ? defaultView.getComputedStyle(elem, null) : elem.currentStyle; top -= elem.scrollTop; left -= elem.scrollLeft; if ( elem === offsetParent ) { top += elem.offsetTop; left += elem.offsetLeft; if ( jQuery.offset.doesNotAddBorder && !(jQuery.offset.doesAddBorderForTableAndCells && /^t(able|d|h)$/i.test(elem.nodeName)) ) { top += parseFloat( computedStyle.borderTopWidth ) || 0; left += parseFloat( computedStyle.borderLeftWidth ) || 0; } prevOffsetParent = offsetParent, offsetParent = elem.offsetParent; } if ( jQuery.offset.subtractsBorderForOverflowNotVisible && computedStyle.overflow !== "visible" ) { top += parseFloat( computedStyle.borderTopWidth ) || 0; left += parseFloat( computedStyle.borderLeftWidth ) || 0; } prevComputedStyle = computedStyle; } if ( prevComputedStyle.position === "relative" || prevComputedStyle.position === "static" ) { top += body.offsetTop; left += body.offsetLeft; } if ( jQuery.offset.supportsFixedPosition && prevComputedStyle.position === "fixed" ) { top += Math.max( docElem.scrollTop, body.scrollTop ); left += Math.max( docElem.scrollLeft, body.scrollLeft ); } return { top: top, left: left }; }; } Object : offset
jQuery.offset = { Function : initialize
Internal function
initialize: function() { var body = document.body, container = document.createElement("div"), innerDiv, checkDiv, table, td, bodyMarginTop = parseFloat( jQuery.curCSS(body, "marginTop", true) ) || 0, html = "<div style='position:absolute;top:0;left:0;margin:0;border:5px solid #000;padding:0;width:1px;height:1px;'><div></div></div><table style='position:absolute;top:0;left:0;margin:0;border:5px solid #000;padding:0;width:1px;height:1px;' cellpadding='0' cellspacing='0'><tr><td></td></tr></table>"; jQuery.extend( container.style, { position: "absolute", top: 0, left: 0, margin: 0, border: 0, width: "1px", height: "1px", visibility: "hidden" } ); container.innerHTML = html; body.insertBefore( container, body.firstChild ); innerDiv = container.firstChild; checkDiv = innerDiv.firstChild; td = innerDiv.nextSibling.firstChild.firstChild; this.doesNotAddBorder = (checkDiv.offsetTop !== 5); this.doesAddBorderForTableAndCells = (td.offsetTop === 5); checkDiv.style.position = "fixed", checkDiv.style.top = "20px"; // safari subtracts parent border width here which is 5px this.supportsFixedPosition = (checkDiv.offsetTop === 20 || checkDiv.offsetTop === 15); checkDiv.style.position = checkDiv.style.top = ""; innerDiv.style.overflow = "hidden", innerDiv.style.position = "relative"; this.subtractsBorderForOverflowNotVisible = (checkDiv.offsetTop === -5); this.doesNotIncludeMarginInBodyOffset = (body.offsetTop !== bodyMarginTop); body.removeChild( container ); body = container = innerDiv = checkDiv = table = td = null; jQuery.offset.initialize = jQuery.noop; }, Function : bodyOffset
Internal function
bodyOffset: function( body ) { var top = body.offsetTop, left = body.offsetLeft; jQuery.offset.initialize(); if ( jQuery.offset.doesNotIncludeMarginInBodyOffset ) { top += parseFloat( jQuery.curCSS(body, "marginTop", true) ) || 0; left += parseFloat( jQuery.curCSS(body, "marginLeft", true) ) || 0; } return { top: top, left: left }; }, Function : setOffset
Internal function
setOffset: function( elem, options, i ) { // set position first, in-case top/left are set even on static elem if ( /static/.test( jQuery.curCSS( elem, "position" ) ) ) { elem.style.position = "relative"; } var curElem = jQuery( elem ), curOffset = curElem.offset(), curTop = parseInt( jQuery.curCSS( elem, "top", true ), 10 ) || 0, curLeft = parseInt( jQuery.curCSS( elem, "left", true ), 10 ) || 0; if ( jQuery.isFunction( options ) ) { options = options.call( elem, i, curOffset ); } var props = { top: (options.top - curOffset.top) + curTop, left: (options.left - curOffset.left) + curLeft }; if ( "using" in options ) { options.using.call( elem, props ); } else { curElem.css( props ); } } };
Extend : dimensions
Description
jQuery.fn.extend({ Function : position
Get the current coordinates of the first element in the set of matched elements, relative to the offset parent
position: function() { if ( !this[0] ) { return null; } var elem = this[0], // Get *real* offsetParent offsetParent = this.offsetParent(), // Get correct offsets offset = this.offset(), parentOffset = /^body|html$/i.test(offsetParent[0].nodeName) ? { top: 0, left: 0 } : offsetParent.offset(); // Subtract element margins // note: when an element has margin: auto the offsetLeft and marginLeft // are the same in Safari causing offset.left to incorrectly be 0 offset.top -= parseFloat( jQuery.curCSS(elem, "marginTop", true) ) || 0; offset.left -= parseFloat( jQuery.curCSS(elem, "marginLeft", true) ) || 0; // Add offsetParent borders parentOffset.top += parseFloat( jQuery.curCSS(offsetParent[0], "borderTopWidth", true) ) || 0; parentOffset.left += parseFloat( jQuery.curCSS(offsetParent[0], "borderLeftWidth", true) ) || 0; // Subtract the two offsets return { top: offset.top - parentOffset.top, left: offset.left - parentOffset.left }; }, Function : offsetParent
Get the closest ancestor element that is positioned
offsetParent: function() { return this.map(function() { var offsetParent = this.offsetParent || document.body; while ( offsetParent && (!/^body|html$/i.test(offsetParent.nodeName) && jQuery.css(offsetParent, "position") === "static") ) { offsetParent = offsetParent.offsetParent; } return offsetParent; }); } });
Code : Create scrollLeft and scrollTop methods
// Create scrollLeft and scrollTop methods jQuery.each( ["Left", "Top"], function( i, name ) { var method = "scroll" + name; jQuery.fn[ method ] = function(val) { var elem = this[0], win; if ( !elem ) { return null; } if ( val !== undefined ) { // Set the scroll offset return this.each(function() { win = getWindow( this ); if ( win ) { win.scrollTo( !i ? val : jQuery(win).scrollLeft(), i ? val : jQuery(win).scrollTop() ); } else { this[ method ] = val; } }); } else { win = getWindow( elem ); // Return the scroll offset return win ? ("pageXOffset" in win) ? win[ i ? "pageYOffset" : "pageXOffset" ] : jQuery.support.boxModel && win.document.documentElement[ method ] || win.document.body[ method ] : elem[ method ]; } }; }); Function : getWindow
Internal function
function getWindow( elem ) { return ("scrollTo" in elem && elem.document) ? elem : elem.nodeType === 9 ? elem.defaultView || elem.parentWindow : false; } Code : Create innerHeight, innerWidth, outerHeight and outerWidth methods
// Create innerHeight, innerWidth, outerHeight and outerWidth methods jQuery.each([ "Height", "Width" ], function( i, name ) { var type = name.toLowerCase(); // innerHeight and innerWidth jQuery.fn["inner" + name] = function() { return this[0] ? jQuery.css( this[0], type, false, "padding" ) : null; }; // outerHeight and outerWidth jQuery.fn["outer" + name] = function( margin ) { return this[0] ? jQuery.css( this[0], type, false, margin ? "margin" : "border" ) : null; }; jQuery.fn[ type ] = function( size ) { // Get window width or height var elem = this[0]; if ( !elem ) { return size == null ? null : this; } if ( jQuery.isFunction( size ) ) { return this.each(function( i ) { var self = jQuery( this ); self[ type ]( size.call( this, i, self[ type ]() ) ); }); } return ("scrollTo" in elem && elem.document) ? // does it walk and quack like a window? // Everyone else use document.documentElement or document.body depending on Quirks vs Standards mode elem.document.compatMode === "CSS1Compat" && elem.document.documentElement[ "client" + name ] || elem.document.body[ "client" + name ] : // Get document width or height (elem.nodeType === 9) ? // is it a document // Either scroll[Width/Height] or offset[Width/Height], whichever is greater Math.max( elem.documentElement["client" + name], elem.body["scroll" + name], elem.documentElement["scroll" + name], elem.body["offset" + name], elem.documentElement["offset" + name] ) : // Get or set width or height on the element size === undefined ? // Get width or height on the element jQuery.css( elem, type ) : // Set the width or height on the element (default to pixels if value is unitless) this.css( type, typeof size === "string" ? size : size + "px" ); }; }); Properties : Assign jQuery object to window
// Expose jQuery to the global object window.jQuery = window.$ = jQuery;
})(window);