Question

I´m trying for a while execute a JavaScript function when a user leaves web site by typing a address in the browser and hits return or the user closes the browser clicking in the x button.

I tried the unload event but I cannot get the alert.

This is what I am doing:

$(window).unload(function () {
    alert("Are you sure?");
});

also

$(body).unload(function () {
    alert("Are you sure?");
});

I am running out of ideas!

Answer 1

You can listen to beforeunload event that fires before the unload event, when the page is unloaded.

$(window).on('beforeunload', function(){
    // ...
})