flash+AS3制作的倒计时效果

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 started
                if( 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;
}

 

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。