Mobile Safari Page unload/hide/blur for Deep Linki

I am looking for an event on mobile safari that will detect when the page has been hidden due to a redirect. I want to open my app directly if a user has it installed, then attempt facebook if it is installed, and if not then go to the webpage for that id.

If 'myapp' is installed, then myapp is opened. But the safari tab still gets redirected to facebook.com
If 'myapp' is not installed, but facebook is, then facebook ios app is opened. But the safari tab still gets redirected to facebook.com

I've created a test link with the following HTML/JS:

    <!DOCTYPE html>
    <html>
    <head>
            <title>Redirect Test</title>
            <script type='text/javascript' src='//ajax.googleapis.com/ajax/libs/jquery/1.9.0/jquery.min.js'></script>
            <meta name='viewport' content='initial-scale = 1.0,maximum-scale = 1.0' />
    </head>
    <body>
    <button>Open Oreo</button>
    <script type='text/javascript'>
    jQuery(function(){
            jQuery( 'button' ).on( 'click', function(){
                    var myid = null, fbid = null;

                    // Watch for page leave to kill timers
                    jQuery( window ).on( 'pagehide pageshow blur unload', function(){
                            if ( myid ) {
                                    clearTimeout( myid );
                            }
                            if ( fbid ) {
                                    clearTimeout( fbid );
                            }
                    });

                    window.location = "myapp://fbprofile/oreo";
                    var myid = setTimeout(function(){

                            // My app doesn't exist on device, open facebook
                            window.location = "fb://profile/oreo";
                            fbid = setTimeout(function(){

                                    // Facebook doesn't exist on device, open facebook mobile
                                    window.location = "https://www.facebook.com/oreo";
                            }, 100);
                    }, 100);
            });
    });
    </script>
    </body>
    </html>

Nice code.
EDIT: (removed suggestion about adding return false;)

Try setting a check within your setTimeout functions in stead of just clearing the Timeouts. (I find that clearing is much more effective for intervals in stead of simple 1-time setTimeout calls). Also, I would check to make sure the user isn't on a desktop browser before trying a native app protocol like my app:// or fb:// as those browsers will try to follow that location and end up displaying an error.

Try:

<!DOCTYPE html>
<html>
<head>
    <title>Redirect Test</title>
    <script type='text/javascript' src='//ajax.googleapis.com/ajax/libs/jquery/1.9.0/jquery.min.js'></script>
    <meta name='viewport' content='initial-scale = 1.0,maximum-scale = 1.0' />
</head>
<body>
<button>Open Oreo</button>
<script type='text/javascript'>
var mobileExp = /android|avantgo|blackberry|blazer|compal|elaine|fennec|hiptop|ip(hone|od)|iris|kindle|lge |maemo|midp|mmp|mobile|o2|opera mini|palm( os)?|plucker|pocket|pre\/|psp|smartphone|symbian|treo|up\.(browser|link)|vodafone|wap|windows ce; (iemobile|ppc)|xiino/i;

jQuery(function(){
    jQuery( 'button' ).on( 'click', function(){

        // Don't give desktop browsers a chance to fail on a nativeapp:// protocol
        if(!mobileExp.test(navigator.userAgent)) {
            window.location = "https://www.facebook.com/oreo";
            return;
        }

        var clicked = +new Date, timeout = 100;

        window.location = "myapp://fbprofile/oreo";

        setTimeout(function(){
            // If we're still here after a (timeout), try native facebook app
            if (+new Date - clicked < timeout*2){
                console.log('clicked '+ (+new Date - clicked) +' ago- go to FB');
                window.location = "fb://profile/oreo";
            } else {
                console.log('too late for facebook');
            }
            setTimeout(function(){
                // If we're still here after another (timeout), try facebook web app
                if (+new Date - clicked < timeout*2){
                    console.log('clicked '+ (+new Date - clicked) +' ago- go to browser');
                    window.location = "https://www.facebook.com/oreo";
                } else {
                    console.log('too late for browser');
                }
            }, timeout);
        }, timeout);
    });
});
</script>
</body>
</html>

Of course, un-comment the console logs and do some experimenting with the value of timeout. This exact code tested successfully in IOS 6.1 Safari and Safari 6.0.2 Mac. Hope it helps!