as3.0 简单时间倒计时

var my_data:Date=new Date();

var shijian=my_data.getHours();

var my_Timer:Timer=new Timer(1000);

if ((shijian>10)&&(shijian<22)) {

//trace("test it")

}

var Time1=600;

my_Timer.start();

var fen;

var miao;

var time

my_Timer.addEventListener(TimerEvent.TIMER,_showTxt);

function _showTxt(e:TimerEvent):void {

Time1--;

fen=Math.floor(Time1/60);

time=Time1-fen*60;

miao=time;

if(miao<10){

miao="0"+miao;

}

txt.text=fen+":"+miao;

}