Element.className

Baseline Widely available

This feature is well established and works across many devices and browser versions. It’s been available across browsers since July 2015.

className 获取或设置指定元素的 class 属性的值。

一个表示当前元素的 class 或以空格分隔的多个 class 的字符串变量。

示例

js
let elm = document.getElementById("div1");

if (elm.className == "fixed") {
  // 跳过 class 属性为特定值的元素
  goNextElement();
}

注释

备注: 使用名称className而不是class作为属性名,是因为"class" 在 JavaScript 中是个保留字。

规范

Specification
DOM
# ref-for-dom-element-classname①

浏览器兼容性

Report problems with this compatibility data on GitHub
desktopmobile
Chrome
Edge
Firefox
Opera
Safari
Chrome Android
Firefox for Android
Opera Android
Safari on iOS
Samsung Internet
WebView Android
WebView on iOS
className

Legend

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Full support
Full support
Partial support
Partial support
Has more compatibility info.

参见