Error: Permission denied to access property "resizeTo"

Question

How to solve Permission denied error?

<script type="text/javascript">
    window.addEventListener(
        'message',
        function (event) {
            if (event.data.w && event.data.h) {
                pop.resizeTo(event.data.w, event.data.h); // Error: Permission denied to access property "resizeTo"
            }
        }
    );
   function popup(url) {
        pop = window.open(url, '', 'resizable=yes,scrollbars=yes,width=300,height=600');
        pop.resizeTo(50, 50); // no error here, resize works
    }
</script>

Note: popup(url) opens a popup on different domain.

Answer 1

Are you sure the error isn't coming from the if statement when you check if (event.data.h && event.data.w)? I would imagine that if you don't have permission to access to the event.data.h or the event.data.w your error would manifest there.