<template>
  <div>
    <el-tree
     :data="data"
     node-key="id"
     :default-expanded-keys="[1]"
     :props="defaultProps"
     @node-click="handleNodeClick"
     ></el-tree>
  </div>
</template>
<script>
  export default {
    name: 'dataReportLeft',
    data() {
      return {
        data: [{
          id:1,
          label: '一级 1',
          children: [{
            id:2,
            label: '二级 1-1',
            children: [{
              id:3,
              label: '三级 1-1-1',
              children:[{
                id:4,
                label: '四级 1-1-1',
                children:[{
                  id:5,
                  label: '五级 1-1-1',
                }]
              }]
            }]
          }]
        }, {
          id:2,
          label: '一级 2',
          children: [{
            id:6,
            label: '二级 2-1',
            children: [{
            id:7,
              label: '三级 2-1-1'
            }]
          }, {
            id:8,
            label: '二级 2-2',
            children: [{
              id:9,
              label: '三级 2-2-1'
            }]
          }]
        }, {
          id:3,
          label: '一级 3',
          children: [{
            id:10,
            label: '二级 3-1',
            children: [{
              id:11,
              label: '三级 3-1-1'
            }]
          }, {
            id:12,
            label: '二级 3-2',
            children: [{
              id:13,
              label: '三级 3-2-1'
            }]
          }]
        }],
        defaultProps: {
          children: 'children',
          label: 'label'
        }
      };
    },
    methods: {
      handleNodeClick(data) {
        console.log(data);
      }
    }
  };
</script>
<style lang="sass" scoped>

</style>