Error Access is denied error on accessing iframe document object

Question

For posting AJAX forms in a form with many parameters, I am using a solution of creating an iframe, posting the form to it by POST, and then accessing the iframe's content. specifically, I am accessing the content like this:

$("some_iframe_id").get(0).contentWindow.document

I tested it and it worked.

On some of the pages, I started getting an "Access is denied" error. As far as I know, this shouldn't happen if the iframe is served from the same domain.

I'm pretty sure it was working before. Anybody have a clue?

If I'm not being clear enough: I'm posting to the same domain. So this is not a cross-domain request. I am testing on IE only.

Answer 1

Hello @kartik,

Basically, this error occurs when the document in frame and outside of ii have different domains. 

So to prevent cross-side scripting browsers disable such execution.

Alternatively you could create the iframe completely through javascript so that you can set the src when it is created, but in my case I was using a library which reqired an iframe already be declared on the page.