var timeLine:TimeLine = new TimeLine();
timeLine.addLabel("turnup",0).to(this,{y:this.y + 20},20,null,0)
.addLabel("turndown",0).to(this,{y:this.y - 40},20,null,0)
.addLabel("turnup",0).to(this,{y:this.y + 400},20,null,0)
.addLabel("turndown",0).to(this,{y:this.y - 40},20,null,0)
.addLabel("turnup",0).to(this,{y:this.y + 20},20,null,0);
timeLine.play(0,true);
这是我做的一个抖动动画 感觉有点lou,不知道怎么改进