after closing popup with window.close() and the unload event not firing in IE 11

Question

From the parent page, I have opened a popup using window.open.

Then in the popup, I am trying to close the popup with window.close and on unload, trigger a click in the parent page.

Code in popup.aspx.cs:

ClientScript.RegisterStartupScript(typeof(Page), "closePage", "<script type='text/JavaScript'>window.close();</script>");

Code in the popup.aspx

<script type="text/javascript">
window.onunload = triggerclick;
function triggerclick()
{
var b = window.opener.document.getElementById('ctl00_PageContent_UpdateButton1');
b.click();
return false;
}
</script>

It works fine in FF and chrome, but not in IE 11. Any suggestions on how to tackle this issue? Thanks in advance.

Answer 1

Try window.onbeforeunload, not window.onunload.