<template>
<div class="content-box" >
  <div class="container">
    <p>主体页面 3 - 1 </p>
    <div class="test-div">
      <el-tree
        :data="treeData"
        show-checkbox
        node-key="id"
        :props="defaultProps">
      </el-tree>
    </div>
  </div>
</div>
</template>

<script>
export default {
  data(){
    return{
      treeData: [
        {
          id: 1,
          label: '一级 1',
          children: [
            { 
              id: 4, 
              label: '二级 1-1',
              children: [
                {
                  id: 9,
                  label: '三级 1-1-1'
                }, 
                {
                  id: 10,
                  label: '三级 1-1-2'
                }
              ]
            }
          ]
        }, 
        {
          id: 2,
          label: '一级 2',
          children: [
            {
              id: 5,
              label: '二级 2-1'
            }, 
            {
              id: 6,
              label: '二级 2-2'
            }
          ]
        }, 
        {
          id: 3,
          label: '一级 3',
          children: [
            { 
              id: 7, 
              label: '二级 3-1' 
            }, 
            { 
              id: 8, 
              label: '二级 3-2' 
            }
          ]
        }
      ],
      defaultProps: {
        children: 'children',
        label: 'label'
      }
    }
  }
}
</script>