This is how slidebtn should be done

by lollero

HTML

<meta name="viewport" content="width=device-width">

<div>Yay</div>

CSS

div { position: absolute; }

JavaScript

var x = {};

x.mmove = false;
 
$(window).on("mousemove", function( e) {
    x.e = e;
    x.mmove = true;
});
 
setInterval(function() {

    if ( x.mmove ) {

        x.mmove = false;

        console.log(' MOUSE IS MOVING ');

        $('div').css({ top: x.e.pageY - 40, left: x.e.pageX - 40 });
        
    }

}, 15);