function targetNodeIsLastChild(info) {
    return findChild(info, info.targetNode.parent.children, function (v) {
      return v;
    }, true) === info.targetNode;
  }
function targetNodeIsLastChild(info) {
    return findChild(info, info.targetNode.parent.children, function (v) {
      return v;
    }, true) === info.targetNode;
  }
function targetNodeIsLastChild ( info ) { return findChild ( info , info . targetNode . parent . children , function ( v ) { return v ; } , true ) === info . targetNode ; }
另一节点是最后节点
另一节点是最后节点