jquery timer

jquery 计时器

提供了三个函式
1. everyTime(时间间隔, [计时器名称], 函式名称, [次数限制], [等待函式程序完成])
2. oneTime(时间间隔, [计时器名称], 呼叫的函式)
3. stopTime ([计时器名称], [函式名称])

jQuery.fn.extend({
			everyTime : function(interval, label, fn, times, belay) {
				return this.each(function() {
							jQuery.timer.add(this, interval, label, fn, times,
									belay);
						});
			},
			oneTime : function(interval, label, fn) {
				return this.each(function() {
							jQuery.timer.add(this, interval, label, fn, 1);
						});
			},
			stopTime : function(label, fn) {
				return this.each(function() {
							jQuery.timer.remove(this, label, fn);
						});
			}
		});

jQuery.extend({
	timer : {
		guid : 1,
		global : {},
		regex : /^([0-9]+)\s*(.*s)?$/,
		powers : {
			// Yeah this is major overkill...
			'ms' : 1,
			'cs' : 10,
			'ds' : 100,
			's' : 1000,
			'das' : 10000,
			'hs' : 100000,
			'ks' : 1000000
		},
		timeParse : function(value) {
			if (value == undefined || value == null)
				return null;
			var result = this.regex.exec(jQuery.trim(value.toString()));
			if (result[2]) {
				var num = parseInt(result[1], 10);
				var mult = this.powers[result[2]] || 1;
				return num * mult;
			} else {
				return value;
			}
		},
		add : function(element, interval, label, fn, times, belay) {
			var counter = 0;

			if (jQuery.isFunction(label)) {
				if (!times)
					times = fn;
				fn = label;
				label = interval;
			}

			interval = jQuery.timer.timeParse(interval);

			if (typeof interval != 'number' || isNaN(interval) || interval <= 0)
				return;

			if (times && times.constructor != Number) {
				belay = !!times;
				times = 0;
			}

			times = times || 0;
			belay = belay || false;

			if (!element.$timers)
				element.$timers = {};

			if (!element.$timers[label])
				element.$timers[label] = {};

			fn.$timerID = fn.$timerID || this.guid++;

			var handler = function() {
				if (belay && this.inProgress)
					return;
				this.inProgress = true;
				if ((++counter > times && times !== 0)
						|| fn.call(element, counter) === false)
					jQuery.timer.remove(element, label, fn);
				this.inProgress = false;
			};

			handler.$timerID = fn.$timerID;

			if (!element.$timers[label][fn.$timerID])
				element.$timers[label][fn.$timerID] = window.setInterval(
						handler, interval);

			if (!this.global[label])
				this.global[label] = [];
			this.global[label].push(element);

		},
		remove : function(element, label, fn) {
			var timers = element.$timers, ret;

			if (timers) {

				if (!label) {
					for (label in timers)
						this.remove(element, label, fn);
				} else if (timers[label]) {
					if (fn) {
						if (fn.$timerID) {
							window.clearInterval(timers[label][fn.$timerID]);
							delete timers[label][fn.$timerID];
						}
					} else {
						for (var fn in timers[label]) {
							window.clearInterval(timers[label][fn]);
							delete timers[label][fn];
						}
					}

					for (ret in timers[label])
						break;
					if (!ret) {
						ret = null;
						delete timers[label];
					}
				}

				for (ret in timers)
					break;
				if (!ret)
					element.$timers = null;
			}
		}
	}
});

if (jQuery.browser.msie)
	jQuery(window).one("unload", function() {
				var global = jQuery.timer.global;
				for (var label in global) {
					var els = global[label], i = els.length;
					while (--i)
						jQuery.timer.remove(els[i], label);
				}
			});

使用如下：

	$(this).oneTime( 1000 , function(){
		can_click = true ; ;
	} );