Is there a case insensitive jQuery :contains selector?

To make it optionally case insensitive: http://bugs.jquery.com/ticket/278

$.extend($.expr[':'], { 'containsi': function(elem, i, match, array) { return (elem.textContent || elem.innerText || '').toLowerCase() .indexOf((match[3] || "").toLowerCase()) >= 0; } }); 

then use :containsi instead of :contains

As of jQuery 1.3, this method is deprecated. To get this to work it needs to be defined as a function:

jQuery.expr[':'].Contains = function(a,i,m){ return jQuery(a).text().toUpperCase().indexOf(m[3].toUpperCase())>=0; }; 

If someone (like me) is interested what do a and m[3] mean in Contains definition.

KEY/LEGEND: Params made available by jQuery for use in the selector definitions:

r = jQuery array of elements being scrutinised. (eg: r.length = Number of elements)

i = index of element currently under scrutiny, within array r.

a = element currently under scrutiny. Selector statement must return true to include it in its matched results.

m[2] = nodeName or * that we a looking for (left of colon).

m[3] = param passed into the :selector(param). Typically an index number, as in :nth-of-type(5), or a string, as in :color(blue).

In jQuery 1.8 you will need to use

jQuery.expr[":"].icontains = jQuery.expr.createPseudo(function (arg) { return function (elem) { return jQuery(elem).text().toUpperCase().indexOf(arg.toUpperCase()) >= 0; }; }); 

A variation that seems to perform slightly faster and that also allows regular expressions is:

jQuery.extend ( jQuery.expr[':'].containsCI = function (a, i, m) { //-- faster than jQuery(a).text() var sText = (a.textContent || a.innerText || ""); var zRegExp = new RegExp (m[3], 'i'); return zRegExp.test (sText); } ); 

Not only is this case-insensitive, but it allows powerful searches like:

• $("p:containsCI('\\bup\\b')") (Matches "Up" or "up", but not "upper", "wakeup", etc.)
• $("p:containsCI('(?:Red|Blue) state')") (Matches "red state" or "blue state", but not "up state", etc.)
• $("p:containsCI('^\\s*Stocks?')") (Matches "stock" or "stocks", but only at the start of the paragraph (ignoring any leading whitespace).)

May be late.... but,

I'd prefer to go this way..

$.extend($.expr[":"], { "MyCaseInsensitiveContains": function(elem, i, match, array) { return (elem.textContent || elem.innerText || "").toLowerCase().indexOf((match[3] || "").toLowerCase()) >= 0; } }); 

This way, you DO NOT tamper with jQuery's NATIVE '.contains'... You may need the default one later...if tampered with, you might find yourself back to stackOverFlow...

jQuery.expr[':'].contains = function(a,i,m){ return jQuery(a).text().toUpperCase().indexOf(m[3].toUpperCase())>=0; }; 

The update code works great in 1.3, but "contains" should be lower case on the first letter unlike the previous example.

Refer below to use ":contains" to find text ignoring its case sensitivity from an HTML code,

 $.expr[":"].contains = $.expr.createPseudo(function(arg) { return function( elem ) { return $(elem).text().toUpperCase().indexOf(arg.toUpperCase()) >= 0; }; }); $("#searchTextBox").keypress(function() { if($("#searchTextBox").val().length > 0){ $(".rows").css("display","none"); var userSerarchField = $("#searchTextBox").val(); $(".rows:contains('"+ userSerarchField +"')").css("display","block"); } else { $(".rows").css("display","block"); } }); 

You can also use this link to find case ignoring code based on your jquery version, Make jQuery :contains Case-Insensitive

A faster version using regular expressions.

$.expr[':'].icontains = function(el, i, m) { // checks for substring (case insensitive) var search = m[3]; if (!search) return false; var pattern = new RegExp(search, 'i'); return pattern.test($(el).text()); }; 

I had a similar problem with the following not working...

// This doesn't catch flac or Flac $('div.story span.Quality:not(:contains("FLAC"))').css("background-color", 'yellow'); 

This works and without the need for an extension

$('div.story span.Quality:not([data*="flac"])').css("background-color", 'yellow'); 

This works too, but probably falls into the "manually looping" category....

$('div.story span.Quality').contents().filter(function() { return !/flac/i.test(this.nodeValue); }).parent().css("background-color", 'yellow'); 

New a variable I give it name subString and put string you want to search in some elements text. Then using Jquery selector select elements you need like my example $("elementsYouNeed") and filter by .filter(). In the .filter() it will compare each elements in $("elementsYouNeed") with the function.

In the function i using .toLowerCase() for element text also subString that can avoid case sensitive condition and check if there is a subString in it. After that the .filter() method constructs a new jQuery object from a subset of the matching elements.

Now you can get the match elements in matchObjects and do whatever you want.

var subString ="string you want to match".toLowerCase(); var matchObjects = $("elementsYouNeed").filter(function () {return $(this).text().toLowerCase().indexOf(subString) > -1;});