SHARE THIS PAGE

JS & DOM Reference

Overview

JavaScript Objects

JS Array JS Boolean JS Date JS Math JS Number JS String JS RegExp JS Global

Browser Objects

Window Navigator Screen History Location

Core DOM Objects

DOM Node DOM NodeList DOM NamedNodeMap DOM Document DOM Element DOM Attr

HTML DOM Objects

DOM Document DOM Events DOM Elements
DOM Anchor DOM Area DOM Base DOM Body DOM Button DOM Form DOM Frame/IFrame DOM Frameset DOM Image DOM Input Button DOM Input Checkbox DOM Input File DOM Input Hidden DOM Input Password DOM Input Radio DOM Input Reset DOM Input Submit DOM Input Text DOM Link DOM Meta DOM Object DOM Option DOM Select DOM Style DOM Table DOM td / th DOM tr DOM Textarea

HTMLElement className Property

HTMLElement Object

Definition and Usage

The className property sets or returns the class attribute of an element.

Syntax

HTMLElementObject.className=classname

Browser Support

The className property is supported in all major browsers.

Example

Return the class attribute for the body element:

<html>
<body id="myid" class="mystyle">

<script>
var x=document.getElementsByTagName('body')[0];
document.write("Body CSS class: " + x.className);
document.write("<br>");
document.write("An alternate way: ");
document.write(document.getElementById('myid').className);
</script>

</body>
</html>

Output:

Body CSS class: mystyle
An alternate way: mystyle

Try it yourself »

HTMLElement Object