Question

I recieved a very helpful answer from Eric on how to display a confirmation is the user clicks on a browser back button, giving the user the choice if they want to go back or not.

Below was his answer:

You can use the beforeunload event to achieve this.

$(window).bind("beforeunload", function() {
    return "HI"; // Return whatever message you want
});​

Fiddle

(To use the fiddle, just reload the page or navigate away or whatnot.)

I would also suggest you unbind this upon someone leaving the page in the desired way (a cancel button?), or you may run into undesirable behavior.

For example:

$("a").click(function() {
    $(window).unbind("beforeunload");
});

QUESTION

Now below is something we discussed and we don’t know if there is a clean way to do this but what I want to try and achieve is that if the user does confirm that they want to leave the page, then I want to navigate the user to a different script (Text4.php) and in this script it simply destroys the session and logs the user out. But I want to know if first of all if this is possible and second of all what is your ideas in order to answer this question?

Answer 1

You don’t need JavaScript to do this. I would do the following in your initial page.

session_start();
if(isset($_session['token']){
 //do log out stuff
} else {
 $_session['token'] = //generate random var here
}

When the page loads it looks if a variable is set, if so log out, if not make it.