How to show the “Are you sure you want to navigate away from this page?” when changes committed?

Question

Here in stackoverflow, if you started to make changes then you attempt to navigate away from the page, a javascript confirm button shows up and asks: \"Are you sure you want

Answer 1

With JQuery this stuff is pretty easy to do. Since you can bind to sets.

Its NOT enough to do the onbeforeunload, you want to only trigger the navigate away if someone started editing stuff.