throttle / debounce

throttle.debounce.js

/*
 * jQuery throttle / debounce - v1.1 - 3/7/2010
 * http://benalman.com/projects/jquery-throttle-debounce-plugin/
 *
 * Copyright (c) 2010 "Cowboy" Ben Alman
 * Dual licensed under the MIT and GPL licenses.
 * http://benalman.com/about/license/
 */ 
(function(b, c) {
	var $ = b.jQuery || b.Cowboy || (b.Cowboy = {}),
		a;
	$.throttle = a = function(e, f, j, i) {
		var h, d = 0;
		if (typeof f !== "boolean") {
			i = j;
			j = f;
			f = c;
		}

		function g() {
			var o = this,
				m = +new Date() - d,
				n = arguments;

			function l() {
				d = +new Date();
				j.apply(o, n);
			}

			function k() {
				h = c;
			}
			if (i && !h) {
				l();
			}
			h && clearTimeout(h);
			if (i === c && m > e) {
				l();
			} else {
				if (f !== true) {
					h = setTimeout(i ? k : l, i === c ? e - m : e);
				}
			}
		}
		if ($.guid) {
			g.guid = j.guid = j.guid || $.guid++;
		}
		return g;
	};
	$.debounce = function(d, e, f) {
		return f === c ? a(d, e, false) : a(d, f, e !== false);
	};
})(this);