Get current url of the popup window with javascript

Question

I had a webpage with a link, which opens a new page in a popup window. Everything is fine till here, The popup window contains credit card payment page held by some 3rd part

Answer 1

Google is your friend ;D

 var newURL = window.location.protocol + "://" + window.location.host + "/" 
              + window.location.pathname;

Answer 2

The URL of a page is accessible through the location property of the window object. If you are visiting a site on the same subdomain as you , then you can get the address via

popupWindow.location.href

However, if the popup is from a third party, the same origin policy applies and you are not allowed to inspect the location.href of the popup. The only ways to bypass the same origin policy would involve cooperation from the third party.