Postback javascript

Question

when the user leaves the page I want to give message do you want to leave. I am handling this in function pageUnload() event in javascript.But I don't want to call this in the page postback I want to call when they navigate to different page

Answer 1

Look into window.onbeforeunload .

Note that Firefox 4 and up will not present the custom message to the user (but they do present a dialog asking if the user wants to leave). Safari, Chrome, and IE will.