<el-form-item label="机构" class="ztree-par">
<i class="icon_org"></i>
<input type="text" placeholder="请输入机构" id="ser" v-model="ruleForm.mechanism" @keyup.enter="search_ztree('treeDemo', 'ser')" @click.stop = "control()" class="login-input">
<el-button icon="el-icon-arrow-down" @click.stop="control()"></el-button>
<div class="ztree-z" v-show="ztreeCon">
<ul id="treeDemo" class="ztree"></ul>
</div>
</el-form-item>

import "./../static/ztree/js/jquery.ztree.exhide-3.5.min.js";

expand_ztree(treeId) {
  var treeObj = $.fn.zTree.getZTreeObj(treeId);
  treeObj.expandAll(true);
 },
close_ztree(treeId) {
  var treeObj = $.fn.zTree.getZTreeObj(treeId);
  var nodes = treeObj.transformToArray(treeObj.getNodes());
  var nodeLength = nodes.length;
  for (var i = 0; i < nodeLength; i++) {
  if (nodes[i].id == '0') {
   //根节点：展开
   treeObj.expandNode(nodes[i], true, true, false);
  } else {
   //非根节点：收起
   treeObj.expandNode(nodes[i], false, true, false);
  }
  }
 },
search_ztree(treeId, searchConditionId) {
  this.searchByFlag_ztree(treeId, searchConditionId, "");
 },
searchByFlag_ztree(treeId, searchConditionId, flag) {
  //<1>.搜索条件
  var searchCondition = $('#' + searchConditionId).val();
  //<2>.得到模糊匹配搜索条件的节点数组集合
  var highlightNodes = new Array();
  if (searchCondition != "") {
  var treeObj = $.fn.zTree.getZTreeObj(treeId);
  highlightNodes = treeObj.getNodesByParamFuzzy("name", searchCondition, null);
  }
  //<3>.高亮显示并展示【指定节点s】
  this.highlightAndExpand_ztree(treeId, highlightNodes, searchCondition, flag);
 },
highlightAndExpand_ztree(treeId, highlightNodes, tx, flag) {
  var treeObj = $.fn.zTree.getZTreeObj(treeId);
  //<1>. 先把全部节点更新为普通样式
  var treeNodes = treeObj.transformToArray(treeObj.getNodes());
  for (var i = 0; i < treeNodes.length; i++) {
  treeNodes[i].highlight = false;
  treeObj.updateNode(treeNodes[i]);
  }
  //<2>.收起树, 只展开根节点下的一级节点
  this.close_ztree(treeId);
  //<3>.把指定节点的样式更新为高亮显示，并展开
  if (highlightNodes != null) {
  for (var i = 0; i < highlightNodes.length; i++) {
   if (flag != null && flag != "") {
   if (highlightNodes[i].flag == flag) {
    //高亮显示节点，并展开
    highlightNodes[i].highlight = true;
    treeObj.updateNode(highlightNodes[i]);
    //高亮显示节点的父节点的父节点....直到根节点，并展示
    var parentNode = highlightNodes[i].getParentNode();
    var parentNodes = this.getParentNodes_ztree(treeId, parentNode);
    treeObj.expandNode(parentNodes, true, false, true);
    treeObj.expandNode(parentNode, true, false, true);
   }
   } else {
    treeObj.updateNode(highlightNodes[i]);
   var parentNode = highlightNodes[i].getParentNode();
   var parentNodes = this.getParentNodes_ztree(treeId, parentNode);
   treeObj.expandNode(parentNodes, true, false, true);
   treeObj.expandNode(parentNode, true, false, true);
   }
  }
  }
 },
getParentNodes_ztree(treeId, node) {
  if (node != null) {
  var treeObj = $.fn.zTree.getZTreeObj(treeId);
  var parentNode = node.getParentNode();
  return this.getParentNodes_ztree(treeId, parentNode);
  } else {
  return node;
  }
 }