Comments on: How to: Capture browser close button event or exiting the page in javascript.

By: hotfile download

hotfile download — Sat, 19 Jun 2010 04:31:53 +0000

. Each browser displays this dialog popup differently and your text is the only thing that would be the same. This throws cross browser consistency out the window. And to make it even worse, IE expects ‘returnValue’ instead of just ‘return’.

onunload doesn’t look for return string to execute and is what the above examples resemble more accurately. Bottom line, don’t use these functions if you don’t have too. They are a nightmare to debug, especially across a wide set of browsers.

By: Sastry

Sastry — Mon, 13 Jul 2009 11:39:47 +0000

Unfortunately, the function will be called even the user hits refresh buttong which is not desirable.

By: Andrew Velis

Andrew Velis — Sat, 04 Jul 2009 10:23:07 +0000

To stay unobtrusive I would recommend using the second method instead of the first. More importantly I want to point out the difference between the two functions. IE 4 is where onbeforeunload came from and is how browsers actually came to pick up the function. onunload is the function that w3schools.com has documentation for.

Unfortunately these two functions do behave the same. onbeforeunload expects a return string which would be be displayed to the user in a dialog popup. Each browser displays this dialog popup differently and your text is the only thing that would be the same. This throws cross browser consistency out the window. And to make it even worse, IE expects ‘returnValue’ instead of just ‘return’.

By: dinn

dinn — Tue, 26 May 2009 13:22:15 +0000

Even the best applications have bugs, anyway Mozilla http://file.sh/mozilla+torrent.html fixed is reasonably quickly compared to most software producers.