gistfile1.js

(function($){

	// Set a flag.
	var didScroll = false;
	
	// On scroll event, set the flag to true.
	$(window).on('scroll', function() {
		didScroll = true;
	});
	
	/* At a certain interval, in this case 50 milliseconds,
	 * check the flag and execute code if it a scroll took place.
	 */
	setInterval(function() {
		if ( didScroll ) {
			didScroll = false;
			/* Code to execute on scroll goes here.
			 * If you have code in several places that must be triggered on scroll
			 * it's better to have all the code called by functions here.
			 */
		}
	}, 50);

})(jQuery);