WindowEventHandlers.onhashchange

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句法
范例
The hashchange event
规范
浏览器兼容性
另请参阅
相关话题

WindowEventHandlers.onhashchange 特性为 WindowEventHandlers 混合 EventHandler 为处理 hashchange 事件。

hashchange event fires when a window's hash changes (see Window.location and HTMLHyperlinkElementUtils.hash ).

句法

Using an event handler:

window.onhashchange = funcRef;

Using an HTML event handler:

<body onhashchange="funcRef();">

Using an event listener:

To add an event listener, use addEventListener() :

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

参数

funcRef

范例

Using an event handler

This example uses an event handler ( window.onhashchange ) to check the new hash value whenever it changes. If it equals #cool-feature , the script logs a message to the console.

function locationHashChanged() {
  if (location.hash === '#cool-feature') {
    console.log("You're visiting a cool feature!");
  }
}
window.onhashchange = locationHashChanged;

Using an event listener

This example uses an event listener to log a notification whenever the hash has changed.

function hashHandler() {
  console.log('The hash has changed!');
}
window.addEventListener('hashchange', hashHandler, false);

Overriding the hash

This function sets a new hash dynamically, setting it randomly to one of two values.

function changeHash() {
  location.hash = (Math.random() > 0.5) ? 'location1' : 'location2';
}

The hashchange event

The dispatched hashchange event has the following properties:

字段	类型	描述
`newURL`	`DOMString`	The new URL to which the window is navigating.
`oldURL`	`DOMString`	The previous URL from which the window was navigated.

Polyfill for event.newURL and event.oldURL

// Let this snippet run before your hashchange event binding code
if (!window.HashChangeEvent)(function(){
  var lastURL = document.URL;
  window.addEventListener("hashchange", function(event){
    Object.defineProperty(event, "oldURL", {enumerable:true,configurable:true,value:lastURL});
    Object.defineProperty(event, "newURL", {enumerable:true,configurable:true,value:document.URL});
    lastURL = document.URL;
  });
}());

规范

规范	状态	注释
HTML 实时标准 The definition of 'onhashchange' in that specification.	实时标准
HTML 5.1 在该规范中的 GlobalEventHandlers 定义。	推荐
HTML5 在该规范中的 GlobalEventHandlers 定义。	推荐

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
`onhashchange`	Chrome 5	Edge 12	Firefox 3.6	IE 8	Opera 10	Safari 5	WebView Android ≤37	Chrome Android 18	Firefox Android 4	Opera Android 10.1	Safari iOS 5	Samsung Internet Android 1.0

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句法

参数

范例