The class
global attribute is a space-separated list of the case-sensitive classes of the element. Classes allow CSS and Javascript to select and access specific elements via the class selectors or functions like the DOM method document.getElementsByClassName
.
The source for this interactive example is stored in a GitHub repository. If you'd like to contribute to the interactive examples project, please clone https://github.com/mdn/interactive-examples and send us a pull request.
Though the specification doesn't put requirements on the name of classes, web developers are encouraged to use names that describe the semantic purpose of the element, rather than the presentation of the element. For example, attribute to describe an attribute rather than italics, although an element of this class may be presented by italics. Semantic names remain logical even if the presentation of the page changes.
Specifications
Specification | Status | Comment |
---|---|---|
HTML Living Standard The definition of 'class' in that specification. |
Living Standard | No change from latest snapshot, HTML 5.1 |
HTML 5.1 The definition of 'class' in that specification. |
Recommendation | Snapshot of HTML Living Standard, no change from HTML5 |
HTML5 The definition of 'class' in that specification. |
Recommendation | Snapshot of HTML Living Standard. From HTML 4.01 Specification, class is now a true global attribute. |
HTML 4.01 Specification The definition of 'class' in that specification. |
Recommendation | Supported on all elements but <base> , <basefont> , <head> , <html> , <meta> , <param> , <script> , <style> , and <title> . |
Browser compatibility
The compatibility table in this page is generated from structured data. If you'd like to contribute to the data, please check out https://github.com/mdn/browser-compat-data and send us a pull request.
Desktop | Mobile | |||||||||||
---|---|---|---|---|---|---|---|---|---|---|---|---|
class | Chrome Full support Yes | Edge Full support 12 | Firefox Full support 32 | IE Full support Yes | Opera Full support Yes | Safari Full support Yes | WebView Android Full support Yes | Chrome Android Full support Yes | Firefox Android Full support 32 | Opera Android Full support Yes | Safari iOS Full support Yes | Samsung Internet Android Full support Yes |
Legend
- Full support
- Full support