add() 方法在 DOMTokenList interface adds the given token to the list.

句法

tokenList.add(token1[, token2[, ...tokenN]]);
					

参数

token N
DOMString representing the token (or tokens) to add to the tokenList .

返回值

undefined

范例

In the following example we retrieve the list of classes set on a <span> element as a DOMTokenList 使用 Element.classList . We then add a new token to the list, and write the list into the <span> 's Node.textContent .

First, the HTML:

<span class="a b c"></span>
					

Now the JavaScript:

let span = document.querySelector("span");
let classes = span.classList;
classes.add("d");
span.textContent = classes;
					

输出看起来像这样:

You can add multiple tokens as well:

span.classList.add("d", "e", "f");
					

规范

规范 状态 注释
DOM
The definition of 'add()' in that specification.
实时标准 初始定义

浏览器兼容性

The compatibility table on 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. 更新 GitHub 上的兼容性数据
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Chrome Edge Firefox Internet Explorer Opera Safari Android webview Chrome for Android Firefox for Android Opera for Android Safari on iOS Samsung Internet
add Chrome 1 Edge 12 Firefox Yes IE 10 Opera Yes Safari 5.1 WebView Android Yes Chrome Android Yes Firefox Android Yes Opera Android Yes Safari iOS 5.1 Samsung Internet Android Yes
Multiple arguments for add() Chrome 24 Edge 12 Firefox 26 IE 不支持 No Opera 15 Safari 7 WebView Android ≤37 Chrome Android 25 Firefox Android 26 Opera Android 14 Safari iOS 7 Samsung Internet Android 1.5

图例

完整支持

完整支持

不支持

不支持

元数据

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