Touch detection and replacement of event listeners

small touch detectreplace

var isTouch = function() {
return !!('ontouchstart' in window) ? true : false; 
}
if(isTouch()) {
var fireEvent = ['touchstart','touchend'];
} else {
var fireEvent = ['mousedown','mouseup'];
}

elem.addEventListener(fireEvent[0],function(){
// do some stuff
},false);