解决ztree搜索中多级菜单展示不全问题

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, true, 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) "#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);
  });