解决ztree搜索中多级菜单展示不全问题

ztree 官网的中的 Search Nodes 例子中，所有菜单都是连着的，如果出现某个菜单下无子节点，那么在搜索时，此节点便不会自动展开，这里给出对应的增强版代码

var setting = {        data: {            key: {                title: "t"            },            simpleData: {                enable: true            }        },        view: {            fontCss: getFontCss        }    };    var zNodes =[        { id:1, pId:0, name:"系统参数",open:true},        { id:11, pId:1, name:"通用参数"},        { id:111, pId:11, name:"状态A"},        { id:112, pId:11, name:"状态B"},        { id:12, pId:1, name:"日志"},        { id:121, pId:12, name:"操作类型"},        { id:122, pId:12, name:"操作结果"},        { id:1221, pId:122, name:"操作结果1"},        { id:1222, pId:122, name:"操作结果2"},        { id:12221, pId:1222, name:"操作结果21"},        { id:12222, pId:1222, name:"操作结果22"},        { id:12223, pId:1222, name:"操作结果23"},        { id:2, pId:0, name:"业务参数",open:true},        { id:21, pId:2, name:"工单类型"},        { id:22, pId:2, name:"监控类型"},        { id:23, pId:22, name:"监控子类型1"},        { id:24, pId:22, name:"监控子类型2"},        { id:25, pId:24, name:"监控子子类型1"},        { id:26, pId:24, name:"监控子子类型2"},    ];    var lastValue = '', nodeList = [], fontCss = {};    function searchNode(e) {        var zTree = $.fn.zTree.getZTreeObj("treeDemo");        var value = $.trim(key.val());        lastValue = value;        //zTree.expandAll(true);        $('#treeDemo').html("");        $.fn.zTree.init($("#treeDemo"), setting, zNodes);        if (value != "") {            nodeList = zTree.getNodesByParamFuzzy("name", value);        } else {            nodeList = zTree.getNodesByParamFuzzy("name", "|||||||||||||||");        }        updateNodes(true);    }    var parentNode = [];    function updateNodes(highlight) {        var zTree = $.fn.zTree.getZTreeObj("treeDemo");        parentNode = [];        for( var i=0, l=nodeList.length; i<l; i++) {            nodeList[i].highlight = highlight;            zTree.updateNode(nodeList[i]);            if (!nodeList[i].isParent && !parentNode.contains(nodeList[i].getParentNode().pId)) {                zTree.expandNode(nodeList[i].getParentNode(), true, false, true);                parentNode.push(nodeList[i].getParentNode().pId);                console.log(nodeList[i].getParentNode().pId);            } else {                zTree.expandNode(nodeList[i], true, true, true);            }        }        console.log(parentNode);    }    Array.prototype.contains = function (obj) {        var i = this.length;        while (i--) {            if (this[i] === obj) {                return true;            }        }        return false;    }    function getFontCss(treeId, treeNode) {        return (!!treeNode.highlight) ? {color:"#A60000", "font-weight":"bold"} : {color:"#333", "font-weight":"normal"};    }    var key;    $(document).ready(function(){        $.fn.zTree.init($("#treeDemo"), setting, zNodes);        key = $("#search_name");        key.bind("blur", searchNode);    });

效果演示图