<div class="layui-btn-container">
  <button class="layui-btn layui-btn-sm" type="button" lay-demo="getChecked">获取选中节点数据</button>
  <button class="layui-btn layui-btn-sm" type="button" lay-demo="setChecked">勾选指定节点</button>
  <button class="layui-btn layui-btn-sm" type="button" lay-demo="reload">重载实例</button>
</div>
<div class="demoTable">
  <div class="layui-inline">
    <input type="text" class="layui-input" id="tree_name" autocomplete="off" />
  </div>
  <button class="layui-btn" id="btn_query">搜索</button>
</div>
<div id="test1" class="demo-tree demo-tree-box"></div>

layui.use(['tree', 'util'], function(){
    var $ = layui.$;
    var tree = layui.tree
        ,layer = layui.layer
        ,util = layui.util
    //模拟数据
        ,data1 = [{
          title: '江西'
          ,id: 1
          ,children: [{
            title: '南昌'
            ,id: 1000
            ,children: [{
              title: '青山湖区'
              ,id: 10001
            },{
              title: '高新区'
              ,id: 10002
            }]
          },{
            title: '九江'
            ,id: 1001
          },{
            title: '赣州'
            ,id: 1002
          }]
        },{
          title: '广西'
          ,id: 2
          ,children: [{
            title: '南宁'
            ,id: 2000
          },{
            title: '桂林'
            ,id: 2001
          }]
        },{
          title: '陕西'
          ,id: 3
          ,children: [{
            title: '西安'
            ,id: 3000
          },{
            title: '延安'
            ,id: 3001
          }]
        },{
          title: '四川（可跳转）'
          ,id: 4
          ,href: 'https://www.layui.com/'
          ,children: [{
            title: '成都'
            ,id: 3000
            ,checked: true //默认选中
          },{
            title: '雅安'
            ,id: 3001
          }]
        }];
 
    //常规用法
    tree.render({
      elem: '#test1' //默认是点击节点可进行收缩
      ,data: data1
      ,id: 'demoId1'
      ,showCheckbox: true //是否显示复选框
      ,isJump: true //是否允许点击节点时弹出新窗口跳转
      ,showLine: true //是否开启连接线
      ,edit: ['add', 'update', 'del'] //开启操作节点的图标
      ,click: function(obj){
        var data = obj.data; //获取当前点击的节点数据
        layer.msg('状态：'+ obj.state + '<br>节点数据：' + JSON.stringify(data));
      }
    });
 
    //按钮事件
    util.event('lay-demo', {
      getChecked: function(othis){
        var checkedData = tree.getChecked('demoId1'); //获取选中节点的数据
 
        layer.alert(JSON.stringify(checkedData), {shade:0});
        console.log(checkedData);
      }
      ,setChecked: function(){
        tree.setChecked('demoId1', [3, 4]); //勾选指定节点
      }
      ,reload: function(){
        //重载实例
        tree.reload('demoId1', {});
      }
    });
 
    //搜索节点值
    $('#btn_query').click(function () {
      var name = $("#tree_name").val(); //搜索值
      var elem = $("#test1").find('.layui-tree-txt').css('color', ''); //搜索文本与设置默认颜色
      if (!name) {
        return; //无搜索值返回
      }
      elem.filter(':contains(' + name + ')').css('color', '#FFB800'); //搜索文本并设置标志颜色
      elem.parents('.layui-tree-pack').prev().find('.layui-tree-iconClick').click(); //展开选项
      //console.log(elem);
    })
 
  });