How to disable a script when on mobile device

Question

I have a site which has a parallax scroll effect and it's running the skrollr.js script. It's a mobile first website, but I would like for the script to not run on mobile devices because it won't allow scrolling. Does anyone know how I can prevent the script from running when on a mobile device? Thanks.

The code where the script is uploaded is at then end of the body section. If any other code is needed let me know.

<!-- SCRIPTS -->

<script type="text/javascript" src="js/skrollr.js"></script>
<script type="text/javascript">
    skrollr.init();
</script>

<!--/ SCRIPTS -->

Answer 1

You can use modernizr's touch detection in order to check if it's a touch device, and, if yes, don't init the script.

if (Modernizr.touch) {

}
else 
{
    skrollr.init();
}

or you can check for the user agent (this might not be your best option as user agent isn't always reliable), and write a simple if else, with the skrollr init in the else

  var isMobile = {
            Android: function () {
                return navigator.userAgent.match(/Android/i);
            },
            BlackBerry: function () {
                return navigator.userAgent.match(/BlackBerry/i);
            },
            iOS: function () {
                return navigator.userAgent.match(/iPhone|iPad|iPod/i);
            },
            Opera: function () {
                return navigator.userAgent.match(/Opera Mini/i);
            },
            Windows: function () {
                return navigator.userAgent.match(/IEMobile/i);
            },
            any: function () {
                return (isMobile.Android() || isMobile.BlackBerry() || isMobile.iOS() || isMobile.Opera() || isMobile.Windows());
            }
        };

        if (isMobile.any()) {

        }
        else {

             skrollr.init(); 
        }

Another way of testing would be by checking window.innerWidth and only init your script if the screen size is larger than 760px:

if (window.innerWidth > 760) {
skrollr.init();
}