javascript - 找出 iFrame 的当前 URL

Question

有没有办法找出 iframe 的当前 URL？如果我将警报消息 onload 设置为 document.getElementByTagName("iframe")[0].contentWindow.location.href ，那么每次 iframe 页面更改时，我都会收到当前 url。不幸的是，由于 Javascript 同源政策指南，这在 Chrome 上不起作用。谁能推荐一种替代方法，以便有人在 iframe 中获取页面的当前 URL？

Answer 1

There could be different approaches to jump over same origin policy:

I would suggest postMessages https://developer.mozilla.org/en-US/docs/DOM/window.postMessage

should work with Firefox 3.5, Opera 10, Safari 4.0/Chrome 3.0+, Internet Explorer 8.0. And yet, you have to have access to both domains.

you may also try something like old school XhrIframeProxy or even somehow, Xdomain requests but I am not sure latter has good support yet