为什么链式动画不能实现？只能实现第一个动画呢

Question

.=() {
    = .();
    .= () {
       (,,,(){
          (,,(){
              (,,);
          })
       });
    }
}
=;
=;
(obj,attr,target,fn){  ();
    =.();
    =((){
        =;
        (attr==){
            =.(((obj,attr))*);
        }{
            =((obj,attr));
        }
        =(target-)/;
        =>?.():.();
        (==target){
            ();
            (fn){
                fn();
            }
        }{
            (attr==){
                obj..=+(+)+;
                obj.[attr]=(+)/;
            }{
                obj.[attr]=++;
            }

        }
    },);
}
(obj,attr){
    (obj.){
        obj.[attr];
    }{
        (obj,)[attr];
    }
}

Answer 1

再贴一次完整的代码吧~出错了