HashChangeEvent

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特性
方法
范例
Polyfill
规范
浏览器兼容性
Related events
相关话题

HashChangeEvent interface represents events that fire when the fragment identifier of the URL has changed.

The fragment identifier is the part of the URL that follows (and includes) the # symbol.

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  a:hover text { fill: #0095DD; pointer-events: all;}

特性

This interface also inherits the properties of its parent, 事件 .

HashChangeEvent.newURL 只读
HashChangeEvent.oldURL 只读

方法

This interface has no methods of its own, but inherits the methods of its parent, 事件 .

范例

Syntax options for a hash change

You can listen for the hashchange event using any of the following options:

window.onhashchange = funcRef;

<body onhashchange="funcRef();">

window.addEventListener("hashchange", funcRef, false);

基本范例

function locationHashChanged() {
  if (location.hash === '#somecoolfeature') {
    somecoolfeature();
  }
}
window.addEventListener('hashchange', locationHashChanged);

Polyfill

There are several fallback scripts listed on the Modernizr GitHub page . Basically, those scripts check the location.hash at a regular interval. Here is a version that allows only one handler to be bound to the onhashchange 特性：

;(function(window) {
  // Exit if the browser implements that event
  if ( "onhashchange" in window.document.body ) { return; }
  var location = window.location,
      oldURL = location.href,
      oldHash = location.hash;
  // Check the location hash on a 100ms interval
  setInterval(function() {
    var newURL = location.href,
        newHash = location.hash;
    // If the hash has changed and a handler has been bound...
    if ( newHash != oldHash && typeof window.onhashchange === "function" ) {
      // Execute the handler
      window.onhashchange({
        type: "hashchange",
        oldURL: oldURL,
        newURL: newURL
      });
      oldURL = newURL;
      oldHash = newHash;
    }
  }, 100);
})(window);

规范

规范	状态	注释
HTML 实时标准 The definition of 'HashChangeEvent' 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

	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
`HashChangeEvent`	Chrome 5	Edge 12	Firefox 3.6	IE 8	Opera 10.6	Safari 5	WebView Android Yes	Chrome Android Yes	Firefox Android 4	Opera Android 11	Safari iOS 5	Samsung Internet Android Yes
`newURL`	Chrome Yes	Edge 12	Firefox 6	IE No	Opera Yes	Safari Yes	WebView Android Yes	Chrome Android Yes	Firefox Android Yes	Opera Android Yes	Safari iOS Yes	Samsung Internet Android Yes
`oldURL`	Chrome Yes	Edge 12	Firefox 6	IE No	Opera Yes	Safari Yes	WebView Android Yes	Chrome Android Yes	Firefox Android Yes	Opera Android Yes	Safari iOS Yes	Samsung Internet Android Yes

图例

完整支持
不支持

Related events

hashchange
popstate

元数据

最后修改： Jun 13, 2020

在此页

特性

方法

范例

Syntax options for a hash change

基本范例

Polyfill

规范

浏览器兼容性

图例

Related events

相关话题