Add temporary class to HTML element

tmpClass.js

$(document).ready(function () {
$.fn.extend({

		tmpClass: function (className, duration) {
			var elements = this;
			setTimeout(function () {
				elements.removeClass(className);
			}, duration);

			return this.each(function () {
				$(this).addClass(className);
			});
		}
	});
  
  
  // use of this function
  $("#about h1").tmpClass("shake animated", 500);
  
  
});