如何跟踪 iframe 内的标签？

Question

Can I get the advertiser's site url from an AdSense ad iframe that is posted on my site via JavaScript?

I tried various ways to access the iframe, but for some reason I couldn't get the link.

Answer 1

If you're accessing an iframe of the same site, you can use this to get the document object of iframe.

var iframe = document.getElementById('replace with iframe element id');
var iframeDoc = iframe.contentDocument || iframe.contentWindow.document;

However, if the iframe is of other site(this is your case), you cannot access it because it would be cross site scripting(XSS) then.