在现代浏览器（IE8 +，FF3.6 +，Chrome）中，您只能听在窗口上的 hashchange 事件。

在某些旧版本中浏览器，您需要一个计时器来连续检查 location.hash 。如果您使用的是jQuery，则可以使用插件来实现。 p>

How can I check if a URL has changed in JavaScript? For example, websites like GitHub, which use AJAX, will append page information after a # symbol to create a unique URL without reloading the page. What is the best way to detect if this URL changes?

• Is the onload event called again?
• Is there an event handler for the URL?
• Or must the URL be checked every second to detect a change?

In modern browsers (IE8+, FF3.6+, Chrome), you can just listen to the hashchange event on window.

In some old browsers, you need a timer that continually checks location.hash. If you're using jQuery, there is a plugin that does exactly that.