MediaQueryList.matches

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句法
范例
规范
浏览器兼容性
另请参阅
相关话题

匹配 只读特性在 MediaQueryList 接口是 布尔 that returns true 若 document currently matches the media query list, or false 若不。

You can be notified when the value of 匹配 changes by watching for the change event to be fired at the MediaQueryList .

句法

var matches = <varm>MediaQueryList.matches;

值

A 布尔 which is true 若 document currently matches the media query list; otherwise, it's false .

范例

This example detects viewport orientation changes by creating a media query using the orientation media feature:

function addMQListener(mq, callback) {
  if (mq.addEventListener) {
    mq.addEventListener("change", callback);
  } else {
    mq.addListener(callback);
  }
}
addMQListener(window.matchMedia("(orientation:landscape)"),
  event => {
    if (event.matches) {
      /* now in landscape orientation */
    } else {
      /* now in portrait orientation */
    }
  }
);

规范

规范	状态	注释
CSSOM (CSS 对象模型) 视图模块 The definition of 'matches' in that specification.	工作草案	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

	桌面						移动
	Chrome	Edge	Firefox	Internet Explorer	Opera	Safari	Android webview	Chrome for Android	Firefox for Android	Opera for Android	Safari on iOS	Samsung Internet
`匹配`	Chrome 9	Edge 12	Firefox 6	IE 10	Opera 12.1	Safari 5.1	WebView Android Yes	Chrome Android 18	Firefox Android Yes	Opera Android Yes	Safari iOS 5	Samsung Internet Android 1.0

图例

完整支持

另请参阅

元数据

最后修改： Jul 25, 2020

CSS Object Model
MediaQueryList
特性
1. 匹配
2. media
3. onchange
方法
1. addListener()
2. removeListener()
Related pages for CSSOM

在此页

句法

值

范例

规范

浏览器兼容性

图例

另请参阅

相关话题