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i need a custom confirmation box with ok , cancel button instead javascript confirm title on onbeforeunload event. please help me on this.
ZurdoDev 2-Apr-15 7:49am    
Sure. There are tons of examples online. Where are you stuck?
sherin.prajin 2-Apr-15 7:58am    
$(window).on('beforeunload', function () {

return 'Are you sure want to quit the application?.';

it is showing a confirmation box , but the header is 'Javascript Confirm'
instead of this i need custom box.
ZurdoDev 2-Apr-15 8:01am    
Then call a custom box inside the beforeunload function.

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Sergey Alexandrovich Kryukov 2-Apr-15 11:56am    
5ed. I added additional information in my answer, please see.
Peter Leow 2-Apr-15 11:59am    
Thank you, Sergey.
In addition to Solution 1:

You can also find plenty of 3rd-party jQuery UI plug-ins collectively known as "modal popup", with different visual effects, such as transitions, and, notably, dimming of the rest of the screen:

The benefit of such solution is not just visual effects. This light-weight approach is always better for the user. JavaScript embedded alert and confirmation dialogs create a new window, which is inconvenient, not flexible, looks ugly.

If you need to learn jQuery (highly recommended), please see:,,,, (start from here).

Remember that jQuery is designed with compatibility in mind.

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Peter Leow 2-Apr-15 11:59am    
That make the solution complete, 5ed.
Sergey Alexandrovich Kryukov 2-Apr-15 12:02pm    
Thank you, Peter.

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