Question

I have a javascript script that is being run from within an iframe that is trying to access the parent but I’m getting the following error:

Unsafe JavaScript attempt to access frame with URL mysite.com from frame with URL myothersite.com?. Domains, protocols and ports must match.

The iframe html is on a different domain but I didn’t think that would matter. This is the code that is generating the JS error:

var parent_site = parent.document;

Is there a way around this?

Answer 1

If the parent domain is a trailing part of the iframe domain (i.e., iframe is child.parent.com and parent is parent.com) you can set the domain of the iframe document with document.domain = "parent.com" and avoid the problem.

If the domains of the parent and the iframe are unrelated there is no way to work around it.