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全局属性class，是一个以空格分隔的class属性列表。可允许CSS和Javascript对Class属性进行选择，通过class选择器或者类似DOM方法的方程来选取文档中某一类特定的元素。
document.getElementsByClassName.
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 to the presentation of the element (e.g., 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.
详细说明
| 具体条目 | 标准 | 备注 |
|---|---|---|
| WHATWG HTML Living Standard class |
Living Standard | No change from latest snapshot, HTML5.1 |
| HTML5.1 class |
Working Draft | Snapshot of WHATWG HTML Living Standard, no change from HTML5 |
| HTML5 class |
Recommendation | Snapshot of WHATWG HTML Living Standard. From HTML 4.01 Specification, class is now a true global attribute. |
| HTML 4.01 Specification class |
Recommendation | Supported on all elements but <base>, <basefont>, <head>, <html>, <meta>, <param>, <script>, <style>, and <title>. |
浏览器兼容
| 特性 | Chrome | Firefox (Gecko) | Internet Explorer | Opera | Safari |
|---|---|---|---|---|---|
| 基础支持 | (Yes) | (Yes) [1] | (Yes) | (Yes) | (Yes) |
| 特性 | Android | Chrome for Android | Firefox Mobile (Gecko) | IE Mobile | Opera Mobile | Safari Mobile |
|---|---|---|---|---|---|---|
| 基础支持 | (Yes) | (Yes) | (Yes) [1] | (Yes) | (Yes) | (Yes) |
[1] 在Firefox 32及往后的版本中，class才成为真正的全局属性。
另见
- 所有全局属性。