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fix incorrect loop condition pointed out by @David

edit approved Sep 15, 2021 at 15:54

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The following description is taken from this page:

The getElementsByClassName() method returns a collection of all elements in the document with the specified class name, as a NodeList object.

The NodeList object represents a collection of nodes. The nodes can be accessed by index numbers. The index starts at 0.

Tip: You can use the length property of the NodeList object to determine the number of elements with a specified class name, then you can loop through all elements and extract the info you want.

So, as a parameter getElementsByClassName would accept a class name.

If this is your HTML body:

<div id="first" class="menuItem"></div> <div id="second" class="menuItem"></div> <div id="third" class="menuItem"></div> <div id="footer"></div>

then var menuItems = document.getElementsByClassName('menuItem') would return a collection (not an array) of the 3 upper <div>s, as they match the given class name.

You can then iterate over this nodes (<div>s in this case) collection with:

for (var menuItemIndex = 0 ; menuItemIndex < menuItems.length ; menuItemIndex ++) { var currentMenuItem = menuItems[menuItemIndex]; // do stuff with currentMenuItem as a node. }

Please refer to this post for more on differences between elements and nodes.

The following description is taken from this page:

The getElementsByClassName() method returns a collection of all elements in the document with the specified class name, as a NodeList object.

The NodeList object represents a collection of nodes. The nodes can be accessed by index numbers. The index starts at 0.

Tip: You can use the length property of the NodeList object to determine the number of elements with a specified class name, then you can loop through all elements and extract the info you want.

So, as a parameter getElementsByClassName would accept a class name.

If this is your HTML body:

<div id="first" class="menuItem"></div> <div id="second" class="menuItem"></div> <div id="third" class="menuItem"></div> <div id="footer"></div>

then var menuItems = document.getElementsByClassName('menuItem') would return a collection (not an array) of the 3 upper <div>s, as they match the given class name.

You can then iterate over this nodes (<div>s in this case) collection with:

for (var menuItemIndex = 0 ; menuItems.length ; menuItemIndex ++) { var currentMenuItem = menuItems[menuItemIndex]; // do stuff with currentMenuItem as a node. }

Please refer to this post for more on differences between elements and nodes.

The following description is taken from this page:

The getElementsByClassName() method returns a collection of all elements in the document with the specified class name, as a NodeList object.

The NodeList object represents a collection of nodes. The nodes can be accessed by index numbers. The index starts at 0.

Tip: You can use the length property of the NodeList object to determine the number of elements with a specified class name, then you can loop through all elements and extract the info you want.

So, as a parameter getElementsByClassName would accept a class name.

If this is your HTML body:

<div id="first" class="menuItem"></div> <div id="second" class="menuItem"></div> <div id="third" class="menuItem"></div> <div id="footer"></div>

then var menuItems = document.getElementsByClassName('menuItem') would return a collection (not an array) of the 3 upper <div>s, as they match the given class name.

You can then iterate over this nodes (<div>s in this case) collection with:

for (var menuItemIndex = 0 ; menuItemIndex < menuItems.length ; menuItemIndex ++) { var currentMenuItem = menuItems[menuItemIndex]; // do stuff with currentMenuItem as a node. }

Please refer to this post for more on differences between elements and nodes.

Commonmark migration

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edited Jun 20, 2020 at 9:12

Community Bot

The following description is taken from this page:

The getElementsByClassName() method returns a collection of all elements in the document with the specified class name, as a NodeList object.

The NodeList object represents a collection of nodes. The nodes can be accessed by index numbers. The index starts at 0.

Tip: You can use the length property of the NodeList object to determine the number of elements with a specified class name, then you can loop through all elements and extract the info you want.

So, as a parameter getElementsByClassName would accept a class name.

If this is your HTML body:

<div id="first" class="menuItem"></div> <div id="second" class="menuItem"></div> <div id="third" class="menuItem"></div> <div id="footer"></div>

then var menuItems = document.getElementsByClassName('menuItem') would return a collection (not an array) of the 3 upper <div>s, as they match the given class name.

You can then iterate over this nodes (<div>s in this case) collection with:

for (var menuItemIndex = 0 ; menuItems.length ; menuItemIndex ++) { var currentMenuItem = menuItems[menuItemIndex]; // do stuff with currentMenuItem as a node. }

Please refer to this post for more on differences between elements and nodes.

The following description is taken from this page:

The getElementsByClassName() method returns a collection of all elements in the document with the specified class name, as a NodeList object.

The NodeList object represents a collection of nodes. The nodes can be accessed by index numbers. The index starts at 0.

Tip: You can use the length property of the NodeList object to determine the number of elements with a specified class name, then you can loop through all elements and extract the info you want.

So, as a parameter getElementsByClassName would accept a class name.

If this is your HTML body:

<div id="first" class="menuItem"></div> <div id="second" class="menuItem"></div> <div id="third" class="menuItem"></div> <div id="footer"></div>

then var menuItems = document.getElementsByClassName('menuItem') would return a collection (not an array) of the 3 upper <div>s, as they match the given class name.

You can then iterate over this nodes (<div>s in this case) collection with:

for (var menuItemIndex = 0 ; menuItems.length ; menuItemIndex ++) { var currentMenuItem = menuItems[menuItemIndex]; // do stuff with currentMenuItem as a node. }

Please refer to this post for more on differences between elements and nodes.

The following description is taken from this page:

The getElementsByClassName() method returns a collection of all elements in the document with the specified class name, as a NodeList object.

The NodeList object represents a collection of nodes. The nodes can be accessed by index numbers. The index starts at 0.

Tip: You can use the length property of the NodeList object to determine the number of elements with a specified class name, then you can loop through all elements and extract the info you want.

So, as a parameter getElementsByClassName would accept a class name.

If this is your HTML body:

<div id="first" class="menuItem"></div> <div id="second" class="menuItem"></div> <div id="third" class="menuItem"></div> <div id="footer"></div>

then var menuItems = document.getElementsByClassName('menuItem') would return a collection (not an array) of the 3 upper <div>s, as they match the given class name.

You can then iterate over this nodes (<div>s in this case) collection with:

for (var menuItemIndex = 0 ; menuItems.length ; menuItemIndex ++) { var currentMenuItem = menuItems[menuItemIndex]; // do stuff with currentMenuItem as a node. }

Please refer to this post for more on differences between elements and nodes.

replaced http://stackoverflow.com/ with https://stackoverflow.com/

Source Link

edited May 23, 2017 at 11:47

URL Rewriter Bot

The following description is taken from this page:

The getElementsByClassName() method returns a collection of all elements in the document with the specified class name, as a NodeList object.

The NodeList object represents a collection of nodes. The nodes can be accessed by index numbers. The index starts at 0.

Tip: You can use the length property of the NodeList object to determine the number of elements with a specified class name, then you can loop through all elements and extract the info you want.

So, as a parameter getElementsByClassName would accept a class name.

If this is your HTML body:

<div id="first" class="menuItem"></div> <div id="second" class="menuItem"></div> <div id="third" class="menuItem"></div> <div id="footer"></div>

then var menuItems = document.getElementsByClassName('menuItem') would return a collection (not an array) of the 3 upper <div>s, as they match the given class name.

You can then iterate over this nodes (<div>s in this case) collection with:

for (var menuItemIndex = 0 ; menuItems.length ; menuItemIndex ++) { var currentMenuItem = menuItems[menuItemIndex]; // do stuff with currentMenuItem as a node. }

Please refer to this post this post for more on differences between elements and nodes.

The following description is taken from this page:

The getElementsByClassName() method returns a collection of all elements in the document with the specified class name, as a NodeList object.

The NodeList object represents a collection of nodes. The nodes can be accessed by index numbers. The index starts at 0.

Tip: You can use the length property of the NodeList object to determine the number of elements with a specified class name, then you can loop through all elements and extract the info you want.

So, as a parameter getElementsByClassName would accept a class name.

If this is your HTML body:

<div id="first" class="menuItem"></div> <div id="second" class="menuItem"></div> <div id="third" class="menuItem"></div> <div id="footer"></div>

then var menuItems = document.getElementsByClassName('menuItem') would return a collection (not an array) of the 3 upper <div>s, as they match the given class name.

You can then iterate over this nodes (<div>s in this case) collection with:

for (var menuItemIndex = 0 ; menuItems.length ; menuItemIndex ++) { var currentMenuItem = menuItems[menuItemIndex]; // do stuff with currentMenuItem as a node. }

Please refer to this post for more on differences between elements and nodes.

The following description is taken from this page:

The getElementsByClassName() method returns a collection of all elements in the document with the specified class name, as a NodeList object.

The NodeList object represents a collection of nodes. The nodes can be accessed by index numbers. The index starts at 0.

Tip: You can use the length property of the NodeList object to determine the number of elements with a specified class name, then you can loop through all elements and extract the info you want.

So, as a parameter getElementsByClassName would accept a class name.

If this is your HTML body:

<div id="first" class="menuItem"></div> <div id="second" class="menuItem"></div> <div id="third" class="menuItem"></div> <div id="footer"></div>

then var menuItems = document.getElementsByClassName('menuItem') would return a collection (not an array) of the 3 upper <div>s, as they match the given class name.

You can then iterate over this nodes (<div>s in this case) collection with:

for (var menuItemIndex = 0 ; menuItems.length ; menuItemIndex ++) { var currentMenuItem = menuItems[menuItemIndex]; // do stuff with currentMenuItem as a node. }

Please refer to this post for more on differences between elements and nodes.

Source Link

answered Jan 7, 2016 at 9:14

guysigner

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