DOMTokenList.toggle()

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DOMTokenList 接口的 toggle() 方法从列表中删除一个给定的标记 并返回 false 。 如果标记 不存在,则添加并且函数返回 true

语法

tokenList.toggle(token, force);

参数列表

token
标记列表中你想探查并切换的 DOMString .
force {{ 可选 }}
一个Boolean 值, 设置后会将方法变成单向操作. 如设置为false, 则会删除标记列表中匹配的给定标记,且不会再度添加. 如设置为 true, 则将在标记列表中添加给定标记,且不会再度删除。

返回值

该方法返回一个Boolean值 — 如给定标记不存在于列表中返回false , 标记存在则返回true 。

Examples

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

First, the HTML:

<span class="a b">classList is 'a b'</span>

Now the JavaScript:

var span = document.querySelector("span");
var classes = span.classList;
span.onclick = function() {
  var result = classes.toggle("c");
  if(result) {
    span.textContent = "'c' added; classList is now '" + classes + "'.";
  } else {
    span.textContent = "'c' removed; classList is now '" + classes + "'.";
  }
}

The output looks like this:

Specifications

Specification Status Comment
DOM
toggle()
Living Standard Initial definition

Browser compatibility

We're converting our compatibility data into a machine-readable JSON format. This compatibility table still uses the old format, because we haven't yet converted the data it contains. Find out how you can help!

Feature Chrome Firefox (Gecko) Edge Internet Explorer Opera Safari (WebKit)
Basic support (Yes) (Yes) (Yes) IE 9 and below - NO,  Windows 10, IE 11.608 - Yes (Yes) (Yes)
force argument (Yes) (Yes) (Yes) 未实现 (Yes) (Yes)
Feature Android Webview Chrome for Android Firefox Mobile (Gecko) IE Mobile Opera Mobile Safari Mobile
Basic support (Yes) (Yes) (Yes) 未实现 (Yes) (Yes)
force argument (Yes) (Yes) ? 未实现 (Yes) (Yes)

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