jQuery deferred sample

deferred.js

//make sure you have jQuery :)
//<script src="//ajax.googleapis.com/ajax/libs/jquery/1.10.2/jquery.min.js"></script>

(function(jQuery){
  console.log("adding stuff to jQuery");
	
	jQuery.fn.myExtension = function(){
		console.log("I'm asynchronous");
		
		var defer = $.Deferred();
		
		setTimeout(function(){
			console.log("told you I was asynchronous");
			
			defer.resolve();
		}, 1000);
		
		return defer.promise();
	};
})(jQuery);

window.a = $().myExtension().done(function(){ console.log("now it's done"); });

console.log("doing other things... myExtension is done, right?");