iframe - Unsafe JavaScript attempt to access frame with URL

Question

I am getting the below error when i try to set a hash value to the parent url from iframe which contains another domain url:

Unsafe JavaScript attempt to access frame with URL "URL1" from frame with URL "URL2". Domains, protocols and ports must match.

How can I fix this problem?

Answer 1

From a child document of different origin you are not allowed access to the top window's location.hash property, but you are allowed to set the location property itself.

This means that given that the top windows location is http://example.com/page/, instead of doing

parent.location.hash = "#foobar";

you do need to know the parents location and do

parent.location = "http://example.com/page/#foobar";

Since the resource is not navigated this will work as expected, only changing the hash part of the url.

If you are using this for cross-domain communication, then I would recommend using easyXDM instead.