Get original html content from facebook iframe?

Question

Here I work with facebook app.

I have a page that works in an iframe on facebook.

I want to access the main (parent) window of an html source from an iframe that I create.

Here i tried

parent.document and window.top.document and window.parent

all three do not work in my case. If you have another idea, let me know

thank

Answer 1

IFrame. Facebook, , IFrame Facebook;)