javascript - hashchange 触发 popstate

Question

Here's what I'm working with

代码:

<a href="#" onclick="window.onpopstate = function() { alert('pop'); };
    return false; ">set up window.onpopstate
</a><br>
<a href="#somehash2">change hash</a>
<div onclick="alert(location.href);">show location.href</div>​

为什么单击 change hash 链接会触发 popstate，难道它不应该只在我单击 change hash 链接然后单击返回时触发吗？

Answer 1

window.onpopstate 触发的原因不是因为对哈希的更改。这是因为当你点击 anchor 标签时，历史已经被改变了。

来自 https://developer.mozilla.org/en/DOM/window.onpopstate :

A popstate event is dispatched to the window every time the active history entry changes. If the history entry being activated was created by a call to history.pushState() or was affected by a call to history.replaceState(), the popstate event's state property contains a copy of the history entry's state object.