can/util/function/function.js

MIT-licensed, client-side, JavaScript framework that makes building rich web applications easy.

steal('can/util', function (can) {
	can.debounce = function (fn, time, context) {
		var timeout;
		return function () {
			var args = arguments;
			clearTimeout(timeout);
			timeout = setTimeout(can.proxy(function () {
				fn.apply(this, args);
			}, context || this), time);
		};
	};

	can.throttle = function (fn, time, context) {
		var run;
		return function () {
			var args = arguments;
			var ctx = context || this;
			if (!run) {
				run = true;
				setTimeout(function () {
					fn.apply(ctx, args);
					run = false;
				}, time);
			}
		};
	};

	can.defer = function (fn, context) {
		var args = arguments;
		var ctx = context || this;
		setTimeout(function () {
			fn.apply(ctx, args);
		}, 0);
	};

	return can;
});