Example of jQuery Promise/Deferred usage

jquery.promise.js

$(document).ready(function() {

	getSomething().done(function() {
		$("#success-alert").show();
	}).fail(function() {
		$("#fail-alert").show();
	});

});

function getSomething() {
	var deferred = $.Deferred();

	$('#success').on('click', function() {
		deferred.resolve();
	});

	$('#fail').on('click', function() {
		deferred.reject();
	});

	return deferred.promise();
}