jstree 反选，测试400条数据左右有点卡

 $("#reversecheckallmachines").on("change", function () {
                     var checkedNodes = [];
                     var uncheckedNodes = [];

                     var nodes = $tree.jstree("get_json", null, { flat: true });
                     for (var i = 0; i < nodes.length; i++) {
                         if (nodes[i].state.selected) {
                             var findNode = nodes.find(x => x.parent === nodes[i].id);
                             if (!findNode) {
                                 checkedNodes.push(nodes[i]);
                             }
                         }
                         else {
                             var fnode = nodes.find(x => x.parent === nodes[i].id);
                             if (!fnode) {
                                 uncheckedNodes.push(nodes[i]);
                             }
                         }
                     }
                     $tree.jstree("uncheck_node", checkedNodes);
                     $tree.jstree("check_node", uncheckedNodes);
                 });