andrepura/uriSchemeWithHyperlinkFallback.js

## uriSchemeWithHyperlinkFallback.js
// tries to execute the uri:scheme
function uriSchemeWithHyperlinkFallback(uri, href) {
    // set up a timer and start it
    var start = new Date().getTime(),
        end,
        elapsed;

    // attempt to redirect to the uri:scheme
    // the lovely thing about javascript is that it's single threadded.
    // if this WORKS, it'll stutter for a split second, causing the timer to be off
    document.location = uri;

    // end timer
    end = new Date().getTime();

    elapsed = (end - start);

    // if there's no elapsed time, then the scheme didn't fire, and we head to the url.
    if (elapsed < 1) {
        document.location = href;
    }
}

## uriSchemeWithHyperlinkFallback.min.js
function uriSchemeWithHyperlinkFallback(e,t){var n=(new Date).getTime(),r,i;document.location=e;r=(new Date).getTime();i=r-n;if(i<1){document.location=t}}

## x-demo.html
<html>
    <head>
        <script src="http://code.jquery.com/jquery-1.9.1.min.js"></script>
        <script src="uriSchemeWithHyperlinkFallback.min.js"></script>
    </head>
    <body>
        <!-- links will work as expected where javascript is disabled-->
         <a class="intent"
            href="http://facebook.com/someProfile"
            data-scheme="fb://profile/10000">facebook</a>

            <script>
                // `intent` is the class we're using to wire this up. Use whatever you like.
                $('a.intent').on('click', function (event) {
                    uriSchemeWithHyperlinkFallback($(this).data('scheme'), $(this).attr('href'));
                    // we don't want the default browser behavior kicking in and screwing everything up.
                    event.preventDefault();
                });
            </script>
    </body>
</html>
	// tries to execute the uri:scheme
	function uriSchemeWithHyperlinkFallback(uri, href) {
	// set up a timer and start it
	var start = new Date().getTime(),
	end,
	elapsed;

	// attempt to redirect to the uri:scheme
	// the lovely thing about javascript is that it's single threadded.
	// if this WORKS, it'll stutter for a split second, causing the timer to be off
	document.location = uri;

	// end timer
	end = new Date().getTime();

	elapsed = (end - start);

	// if there's no elapsed time, then the scheme didn't fire, and we head to the url.
	if (elapsed < 1) {
	document.location = href;
	}
	}
	<html>
	<head>
	<script src="http://code.jquery.com/jquery-1.9.1.min.js"></script>
	<script src="uriSchemeWithHyperlinkFallback.min.js"></script>
	</head>
	<body>
	<!-- links will work as expected where javascript is disabled-->
	<a class="intent"
	href="http://facebook.com/someProfile"
	data-scheme="fb://profile/10000">facebook</a>

	<script>
	// `intent` is the class we're using to wire this up. Use whatever you like.
	$('a.intent').on('click', function (event) {
	uriSchemeWithHyperlinkFallback($(this).data('scheme'), $(this).attr('href'));
	// we don't want the default browser behavior kicking in and screwing everything up.
	event.preventDefault();
	});
	</script>
	</body>
	</html>