Dzinlife

var MobileDetect = function() { 
	if (navigator.userAgent.match(/Android/i)
	|| navigator.userAgent.match(/webOS/i)
	|| navigator.userAgent.match(/iPhone/i)
	|| navigator.userAgent.match(/iPad/i)
	|| navigator.userAgent.match(/iPod/i)
	|| navigator.userAgent.match(/BlackBerry/i)
	|| navigator.userAgent.match(/Windows Phone/i)
	){
		return true;

Dzinlife

Firefox 14.0.1
window.retina => undefined
window.devicePixelRatio => undefined

Chrome 21.0.1180.57
window.devicePixelRatio => 2
window.retina => undefined

Safari 6.0 (8536.25)
window.retina => true

Dzinlife

function preventMacBackFwdGesture(element, scrollable) {
	if (scrollable === undefined) {
		var scrollable = true;
	};
	$(element).each(function () {
		var $this = $(this);
		var scrollDirection;
		$this.mousewheel(function(event, delta, deltaX, deltaY) {
		    if (Math.abs(deltaX) < Math.abs(deltaY)) {
		    	scrollDirection = "vertical";

Dzinlife

if($(element).is(':hover')) { do something }

function handler( event ) {
  var target = $( event.target );
}