主要代码：

package {
  import flash.events.EventDispatcher;
  import flash.events.TimerEvent;
  import flash.text.TextField;
  import flash.display.Sprite;
  import flash.events.Event;
  public class main extends Sprite {
    var my_text:TextField;
    private var EndTime:Date;
    private var NowTime:Date;
    private var zong;
    private var tian;
    private var shi;
    private var fen;
    private var miao;
    public function main() {
      my_text=new TextField();
      EndTime=new Date(2055,8,1,02,2,2);
      
      my_text.x=100;
      my_text.y=120;
      my_text.width=200;
      addChild(my_text);

      stage.addEventListener(Event.ENTER_FRAME,getTime);
    }
    private function getTime(e:Event) {
      NowTime=new Date();
      zong=Math.floor((EndTime.getTime()-NowTime.getTime())/1000);
      if (zong>0) {
        tian=Math.floor(zong/(60*60*24));
        //取得剩余天数
        zong=zong-tian*60*60*24;
        shi=Math.floor(zong/(60*60));
        //取得剩余小时数
        zong=zong-shi*60*60;
        fen=Math.floor(zong/60);
        //取得剩余分钟数
        zong=zong-fen*60;
        miao=zong;
        //取得剩余秒数
        my_text222.text=String(tian)+"天"+String(shi)+"时"+String(fen)+"分"+String(miao)+"秒";
        trace(String(tian)+"天"+String(shi)+"时"+String(fen)+"分"+String(miao)+"秒");
      }
    }
  }
}