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javascriptonbeforeunload

Javascript onbeforeunload cancel

Is there a way to cancel the javascript event onbeforeunload, and just have it execute a function and return to the page?

window.onbeforeunload = function(){
    //execute some logic
    return false;
}
Solution

  • No. You cannot cancel this event. All you can do is have it return a string. That will make the browser ask the user if they want to leave.

    Just imagine if you could block this event! You could make a site that the user could never close! Just imagine all the popups you could make. There's no way browsers are going to allow this.