The IE onBeforeUnload Event Handler

If you are using Internet Explorer 4+ for Windows, leave this page now!

Really. Either:

• Click the top-right Close button:

• Click the top-left Explorer icon:

• Click the top-right Explorer icon:

• Enter a new URL in the Address: field:

• Click the Back button:

• Click Refresh: , or

• Just click on any link in your Favorites menu or on this page...

A dialog requesting confirmation of page exit should have appeared. Click Cancel to remain on this page. This built-in dialog is an example of Explorer's powerful onbeforeunload event handler.

Now navigate to the second page of this article to learn how to use it. Click OK when the dialog appears again.