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I want to track browser back button. If the user click on the browser back button, It should ask user to logout in pop-up confirm box. If the user press "ok", user account should log out. If user press "cancel", user should stay on the same page. I already visited:

But I am not getting any positive solution for my problem. I already tried this code

window.onbeforeunload = function(evt) {            
    if(confirm('logout ?'))
    {
        return;
    }
    else
    {
        alert('Dont use browser navigations');
        return false;
    }
}

If part is perfectly working. But else part, after alert box the browser shows the default dialog box. If I use return true instead of return in the if part, the browser pops up the confirm box and shows default dialog box followed that. If I use return, It is just showing the confirm box and proceeds the action.

So, in the same way I'm using return false in else part. If I use return false in else part alert box is display after confirm cancel action. Then browser's default dialog box is asking to leave the page or stay on this page.

I want to use another solution instead of return false to make the condition false. If user click the cancel button in confirm box it should do nothing. It should stay on the same page. See the JSFIDDLE demo

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