Custom message in "onbeforeunload".

But, here our requirement is to display another our custom message.

Hi,

As per my knowledge, you can't change the default text in that popup. But still you can add your own text like as provided in your link. Just check below link for more details -

http://stackoverflow.com/questions/30712377/jquery-beforeunload-custom-pop-up-window-for-leaving-a-page

Manas Mohapatra10y ago

In below code:

You can see the custom message. Next to that there there is browser related message, you cannot change.

>
<html>
<body onbeforeunload="return myFunction()">
<p>Close this window, press F5 or click on the link below to invoke the onbeforeunload event.p>
<a href="http://www.w3schools.com">Click here to go to w3schools.coma>
<script>
function myFunction() {
return "My custom message";
}
script>
body>
html>