code: function () {
              var self = this;
              for (var i = 0; i < self.length; i++) {
                  if (Anim.isRunning(self[i])) {
                      return true;
                  }
              }
              return false;
          }
docs: whether one of current node list is animating.
  @return {Boolean}
  @member KISSY.Node