window.top.location vs window.location

how to sync window.top.location and window开发者_JAVA百科.location?

This is how you set the parent of the frame (top) to the location of the frame document...

top.location = self.location;

Of course, this code must be executed within the iframe, and is succeptible to the Same-Origin Policy.

window.top.location is return you to broswer's address bar location even you'r in i-frame or page.. window.location is return location of your current page address in case facebook apps. if you want to top query-string you have to use

alert(window.top.location);

if u want to replace top location then

window.top.location = "http://whatever.com";