MediaQueryListEvent

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构造函数
特性
方法
范例
规范
浏览器兼容性
另请参阅
相关话题

MediaQueryListEvent object stores information on the changes that have happened to a MediaQueryList object — instances are available as the event object on a function referenced by a MediaQueryList.onchange property or MediaQueryList.addListener() 调用。

构造函数

MediaQueryListEvent(): 创建新的 MediaQueryListEvent 实例。

特性

MediaQueryListEvent interface inherits properties from its parent interface, 事件 .

MediaQueryListEvent.matches 只读: 布尔 that returns true 若 document currently matches the media query list, or false 若不。
MediaQueryListEvent.media 只读: DOMString representing a serialized media query.

方法

MediaQueryListEvent interface inherits methods from its parent interface, 事件 .

范例

var mql = window.matchMedia('(max-width: 600px)');
function screenTest(e) {
  if (e.matches) {
    /* the viewport is 600 pixels wide or less */
    para.textContent = 'This is a narrow screen — less than 600px wide.';
    document.body.style.backgroundColor = 'red';
  } else {
    /* the viewport is more than than 600 pixels wide */
    para.textContent = 'This is a wide screen — more than 600px wide.';
    document.body.style.backgroundColor = 'blue';
  }
}
mql.addListener(screenTest);

规范

规范	状态	注释
CSSOM (CSS 对象模型) 视图模块 The definition of 'MediaQueryListEvent' 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
`MediaQueryListEvent`	Chrome Yes	Edge ≤79	Firefox 55	IE No	Opera Yes	Safari ?	WebView Android No	Chrome Android Yes	Firefox Android 55	Opera Android Yes	Safari iOS ?	Samsung Internet Android Yes
`MediaQueryListEvent()` 构造函数	Chrome Yes	Edge ≤79	Firefox 55	IE No	Opera Yes	Safari ?	WebView Android No	Chrome Android Yes	Firefox Android 55	Opera Android Yes	Safari iOS ?	Samsung Internet Android Yes
`匹配`	Chrome Yes	Edge ≤79	Firefox 55	IE No	Opera Yes	Safari ?	WebView Android No	Chrome Android Yes	Firefox Android 55	Opera Android Yes	Safari iOS ?	Samsung Internet Android Yes
`media`	Chrome Yes	Edge ≤79	Firefox 55	IE No	Opera Yes	Safari ?	WebView Android No	Chrome Android Yes	Firefox Android 55	Opera Android Yes	Safari iOS ?	Samsung Internet Android Yes

在此页

构造函数

特性

方法

范例

规范

浏览器兼容性

图例

另请参阅

元数据

相关话题