code: function (selector, context, index) {
              if (typeof context === 'number') {
                  index = context;
                  context = undefined;
              }
              var list = Node.all(selector, context).getDOMNodes(), ret = new Node(this);
              if (index === undefined) {
                  push.apply(ret, list);
              } else {
                  var args = [
                          index,
                          0
                      ];
                  args.push.apply(args, list);
                  AP.splice.apply(ret, args);
              }
              return ret;
          }
docs: return a new Node object which consists of current node list and parameter node list.
  @param {KISSY.Node} selector Selector string or html string or common dom node.
  @param {KISSY.Node|Number} [context] Search context for selector
  @param {Number} [index] Insert position.
  @return {KISSY.Node} a new Node