倒计时

倒计时

ctor:function(){    this._curTime = new Data().getTimer();    this._passTime = this._curTime;    //.....启动定时器   Updata 小于1s执行一次}Updata:function(){    this._curTime = new Data().getTimer();    var diff = parseInt((this._cuiTime - this._passTime + this._diff)/1000);    this._diff = (this._cuiTime - this._passTime + this._diff)%1000;    this._passTime = this.curTime;    if(!diff)        return;    //.............}