HTML5引入了一个 hashchange 事件，允许您注册url哈希更改的通知，无需使用计时器进行轮询。

HTML5 introduces a hashchange event which allows you to register for notifications of url hash changes without polling for them with a timer.

它受所有主流浏览器支持（Firefox 3.6，IE8，Chrome，其他基于Webkit的浏览器），但我仍然强烈建议使用一个处理事件的库 - 即在不支持HTML5事件的浏览器中使用计时器，否则使用事件。

It it supported by all major browsers (Firefox 3.6, IE8, Chrome, other Webkit-based browsers), but I'd still highly suggest to use a library which handles the event for you - i.e. by using a timer in browsers not supporting the HTML5 event and using the event otherwise.

有关该活动的更多信息，请参阅 https://developer.mozilla.org/en/ dom / window.onhashchange 和 http：/ /msdn.microsoft.com/en-us/library/cc288209%28VS.85%29.aspx 。

For further information on the event, see https://developer.mozilla.org/en/dom/window.onhashchange and http://msdn.microsoft.com/en-us/library/cc288209%28VS.85%29.aspx.