找出iFrame的当前URL

Question

Is there anyway of finding out the current URL of an iframe? If I have an alert message onload set to document.getElementByTagName("iframe")[0].contentWindow.location.href the on safari I receive the current url everytime the iframe page changes. Unfortunately this doesn't work on Chrome due to Javascript Same Origin Policy guidelines. Can anyone recommend an alternative approach so someone getting the current URL of the page in an iframe?

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