Question

I want to append querystring to parent page when we close the popup window using javascript.
I am using below code but its not working :

parent.location.href =parent.location.href+"?PostComments=true";

Answer 1

This seems to work for me! A bit too much to add to a comment, so I’ll post it as an answer:

var win=window.open('','','width=200,height=100');
    win.focus();
    win.onunload = function() {
        window.location.search = "querystring"
    };

Note that once you change the querystring the page reloads, and the popup is opened again etc. in a loop, but I’m assuming you’re opening the popup on some event and not on page load, so that should’nt be an issue really.