Definition and Usage
The class attribute specifies one or more classnames for an element.
The class attribute is mostly used to point to a class in a style sheet. However, it can also be used by a JavaScript (via the HTML DOM) to make changes to HTML elements with a specified class.
Applies to
The class attribute is part of the Global Attributes, and can be used on any HTML element.
| Element | Attribute |
|---|---|
| All HTML elements | class |
Example
Use of the class attribute in an HTML document:
<html>
<head>
<style>
h1.intro {
color: blue;
}
p.important {
color: green;
}
</style>
</head>
<body>
<h1 class="intro">Header 1</h1>
<p>A paragraph.</p>
<p class="important">Note that this is an important paragraph. :)</p>
</body>
</html>
Try it Yourself »
Browser Support
| Attribute | |||||
|---|---|---|---|---|---|
| class | Yes | Yes | Yes | Yes | Yes |