Override onbeforeunload

[lightzizo]

Hi All,
I want to override the onbeforeunload event so that when the user
clicks on the close button, at the right top of the screen, it only
open an alert with OK button and don't close the screen

How can I do that???

thanks

regards,
Mohammed

[Evertjan.]

lightzizo wrote on 29 nov 2005 in comp.lang.javascript:

I want to override the onbeforeunload event
You can only override an js event if it is set beforehand.

so that when the user
clicks on the close button, at the right top of the screen, it only
open an alert with OK button and don't close the screen

That would be very impolite.
The window belongs to the user.

try:

window.onbeforeunload = bfunload;

function bfunload(){
alert("OK ?")
return false
}

Most or all browsers will not comply.

--
Evertjan.
The Netherlands.
(Replace all crosses with dots in my emailaddress)

[Duncan Booth]

lightzizo wrote:

Hi All,
I want to override the onbeforeunload event so that when the user
clicks on the close button, at the right top of the screen, it only
open an alert with OK button and don't close the screen

How can I do that???

You can't. onbeforeunload will allow you to ask the browser to display a
confirmation box giving the user the option to cancel the close, but the
script itself cannot prevent the window closing.

Obviously, if you could prevent a window closing then popup advert writers
everywhere would do it all the time.

[lightzizo]

how can i prevent the user from closing the window???

[Duncan Booth]

lightzizo wrote:

how can i prevent the user from closing the window???

Which part of "You can't." did you not understand?

[Jasen Betts]

On 2005-11-29, lightzizo <m.*********@gmail.com> wrote:

how can i prevent the user from closing the window???

first you need to disconnect their computer's off button....

Bye.
Jasen