老师，判断动画在执行中用 .is(":animated") 是不是更好些？

this.nextBtn.click(function(){
            if( !self.posterItem.is(":animated") ){
                self.carouselRotate("left");
            }          
        });
        this.prevBtn.click(function(){
            if( !self.posterItem.is(":animated") ){
                self.carouselRotate("right");
            }  
        })