Exit windows popup messages to be customized with styles css

Question

I want the message "Leaving page will cause loss of data" to be bold. could you please help me?

$(window).bind("beforeunload", function(e) {
    return "Leaving page will cause loss of data";
}).unload(function() {
    // what if they choose 'leave this page'; 
});

The message box which is shown is controlled by the browser/OS at a lower level than JS has access to. You cannot change it. — Rory McCrossan, Jan 22 '16 at 09:37

score 1 · Answer 1 · answered Jan 22 '16 at 09:41

1

The answer is no , you can not style alerts or confirm messages that are shown by the browser. What you can do is write your own modal to pop up , jquery has code that makes that process pretty easy bootstrap does as well. They will be far from the default browser looking alert , but they can be customized to look anyway you would like

answered Jan 22 '16 at 09:41

Scott Selby

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But that's not possible to use it as modal, in strict term speaking. Meaning, you can not block browser behaviour redirecting/closing the page. So here, it is useless – A. Wolff Jan 22 '16 at 09:43
Ture , so the answer goes back to NO – Scott Selby Jan 22 '16 at 09:53

Exit windows popup messages to be customized with styles css

1 Answers1