flash+AS3制造的倒计时效果

flash+AS3制作的倒计时效果

上周由于工作需要，使用flash+AS3开发的倒计时显示效果。

具体的实现代码:

import flash.utils.Timer;import flash.events.TimerEvent;import flash.events.MouseEvent;import flash.net.URLRequest;function doubleString(time:int):String{var r:String=time.toString();if(r.length==1){return "0"+r;}else{return r;}}function goRedirect(evt:MouseEvent):void {var req:URLRequest = new URLRequest("http://xxx.domain.com/greatmessage");navigateToURL(req,'_blank');}var ticker:Timer = new Timer(1000);ticker.addEventListener(TimerEvent.TIMER, onTicker);ticker.start();tmBtn.addEventListener(MouseEvent.CLICK, goRedirect);var downDate:Date = new Date(2011,3,22,24,0,0); //月份是从0开始计数的function onTicker(evt:TimerEvent):Boolean {var currentDate:Date = new Date();var currentTime:Number = currentDate.valueOf();var endTime:Number = downDate.valueOf();var currentOffset:Number = currentDate.getTimezoneOffset();var minusN:Number = endTime - currentTime;//check if we startedif( minusN <= 0) {restime_day.text = '0';restime_hour.text = '00';restime_minute.text = '00';restime_second.text = '00';return true;}var minusSecond:int = downDate.getSeconds() - currentDate.getSeconds();var minusMinute:int;var minusHour:int;var minusDate:int;var minusMonth:int;var minusYear:int;var sFlag:Boolean;var mFlag:Boolean;var hFlag:Boolean;var monFlag:Boolean;if(minusSecond < 0){minusSecond = 60+minusSecond;sFlag = true;}minusMinute = downDate.getMinutes() - currentDate.getMinutes();if(sFlag)minusMinute--;if(minusMinute < 0){minusMinute = 60 + minusMinute;mFlag = true;}minusHour = downDate.getHours() - currentDate.getHours();if(mFlag)minusHour--;if(minusHour < 0){minusHour = 24 + minusHour;hFlag = true;}minusDate  = downDate.getDate() - currentDate.getDate();minusMonth = downDate.getMonth() - currentDate.getMonth();if(hFlag){minusDate--;}if(minusDate < 0){switch(currentDate.getMonth() + 1){case 1,3,5,7,8,10,12:{minusDate = downDate.getDate() + (31- currentDate.getDate());}case 4,6,9,11:{minusDate = downDate.getDate() + (30- currentDate.getDate());}case 2:{if((currentDate.getFullYear()%4 == 0 && currentDate.getFullYear()%100 != 0)||(currentDate.getFullYear()%400 == 0)){//闰年minusDate = downDate.getDate() + (29 - currentDate.getDate());}else{minusDate = downDate.getDate() + (28- currentDate.getDate());}}}minusMonth--;}if(minusMonth < 0){minusMonth = 12+minusMonth;monFlag = true;}minusYear = downDate.getFullYear() - currentDate.getFullYear();if(monFlag){minusYear--;}restime_day.text = String(minusDate);restime_hour.text = doubleString(minusHour);restime_minute.text = doubleString(minusMinute);restime_second.text = doubleString(minusSecond);return true;}

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上述代码只能使用AS3.0来实现，其中，Timer定时器类只在AS3.0才实现，1.0、2.0版本时，主要使用setInterval来实现的。