Disabling JavaScript on certain conditions like a media query -


i'm trying disable script run @ screen size. 

    <script>       function init() {         window.addeventlistener('scroll', function(e){             var distancey = window.pageyoffset || document.documentelement.scrolltop,                 shrinkon = 250,                 header = document.queryselector("header");             if (distancey > shrinkon) {                 classie.add(header,"smaller");             } else {                 if (classie.has(header,"smaller")) {                     classie.remove(header,"smaller");                 }             }         });     }     window.onload = init();  </script>

i've tried wrapping code following

   if($(window).width() > 1200) {   // script here   }

and

    window.addeventlistener('resize', function(){     if(window.innerwidth > 568){          // script here     }  });

but none of them seems work. recommendations?


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