class - HTML: HyperText Markup Language 编辑
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.
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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
BCD tables only load in the browser
See also
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