What is the most compatible way to close a child window and notify its parent window in JavaScript?

Question

I think my title was informative enough. :)

I close the child window like this:

self.close();

Just before this, I want the parent window to know that the child has closed. I am making use of this:

window.opener.startLoad();

The above will run a function that is on the parent window that I need it to run upon the child window closing.

However, this has led to me getting an error:

Permission denied to get property Window.startLoad
window.opener.startLoad();

Even if I could fix this error, I was told it may be due to JavaScript file being in a different folder and therefore seen as a different domain. Will this work across all browsers? If not, is there a safer solution that is efficient and compatible across all the browsers?

Thank you for any help.

Answer 1

This should work as long as the popup is from the same domain as the parent, otherwise due to security restrictions it will never work. Folder is irrelevant.

if (window.opener && window.opener.startLoad)
{
    window.opener.startLoad();
}

Answer 2

With some of my Javascript test pages, when using it in IE, it gives an error locally, but uploading the file to the the Internet and opening it from there works. Maybe you have some strange security setting that's not allowing you to make requests on the same "domain" while running from a local file. Try putting the pages on a web host and see if that works.