vue+iview使用树形控件的具体使用

<Scroll style="width: 100%" height="760">
 <Tree
   @on-select-change="chentreelick"
   :data="treedata"
    expand-node
 ></Tree>
</Scroll>

treedata: [
    {
     title: "parent 1",
     chenshow: false,
     expand: true,
     children: [
      {
       title: "parent 1-1",
       chenshow: false,
       expand: true,
       children: [
        {
         title: "leaf 1-1-1",
         chenshow: true,
        },
        {
         title: "leaf 1-1-2",
         chenshow: true,
         selected: true,
        },
       ],
      },
      {
       title: "parent 1-2",
       chenshow: false,
       expand: true,
       children: [
        {
         title: "leaf 1-2-1",
         chenshow: true,
        },
        {
         title: "leaf 1-2-1",
         chenshow: true,
        },
       ],
      },
      {
       title: "parent 1-3",
       chenshow: false,
       expand: true,
       children: [
        {
         title: "leaf 1-3-1",
         chenshow: true,
        },
        {
         title: "leaf 1-3-1",
         chenshow: true,
        },
       ],
      },
      {
       title: "parent 1-4",
       chenshow: false,
       expand: true,
       children: [
        {
         title: "leaf 1-4-1",
         chenshow: true,
        },
        {
         title: "leaf 1-4-1",
         chenshow: true,
        },
       ],
      },
      {
       title: "parent 1-5",
       chenshow: false,
       expand: true,
       children: [
        {
         title: "leaf 1-5-1",
         chenshow: true,
        },
        {
         title: "leaf 1-5-1",
         chenshow: true,
        },
       ],
      },
      {
       title: "parent 1-6",
       chenshow: false,
       expand: true,
       children: [
        {
         title: "leaf 1-6-1",
         chenshow: true,
        },
        {
         title: "leaf 1-6-1",
         chenshow: true,
        },
       ],
      },
      {
       title: "parent 1-7",
       chenshow: false,
       expand: true,
       children: [
        {
         title: "leaf 1-7-1",
         chenshow: true,
        },
        {
         title: "leaf 1-7-1",
         chenshow: true,
        },
       ],
      },
      {
       title: "parent 1-8",
       chenshow: false,
       expand: true,
       children: [
        {
         title: "leaf 1-8-1",
         chenshow: true,
        },
        {
         title: "leaf 1-8-1",
         chenshow: true,
        },
       ],
      },
      {
       title: "parent 1-9",
       chenshow: false,
       expand: true,
       children: [
        {
         title: "leaf 1-9-1",
         chenshow: true,
        },
        {
         title: "leaf 1-9-1",
         chenshow: true,
        },
       ],
      },
     ],
    },
   ],

chentreelick(data) {
   console.log(data);
   console.log("点击了");
   console.log(data[0].chenshow);
  },
  
  //注意:参数 data,在点击的时候可以获取到后台的数据,这个数据是来自后台的,在实际开发中,我们可以 利用 data,把后台需要的id传给 后台