html

<el-table ref="table" :data="tableData" row-key="id" border @select="select" @select-all="selectAll" :tree-props="{children: 'childList'}"></el-table>

data

tableData: [
        { name: '王小虎', jc: '上海市普陀区金沙江路 1519 弄' },
        { id: 3, date: '2016-05-01', name: '王小虎', jc: '上海市普陀区金沙江路 1519 弄',
          childList: [{ id: 31, date: '2016-05-01', name: '王小虎', jc: '上海市普陀区金沙江路 1519 弄'},
            { id: 32,  date: '2016-05-01',  name: '王小虎', jc: '上海市普陀区金沙江路 1519 弄' }]
        }
      ]

js

  methods: {
    setChildren(children, type) {
      // 编辑多个子层级
      children.map((j) => {
        this.toggleSelection(j, type)
        if (j.childList) {
          this.setChildren(j.childList, type)
        }
      })
    },
    // 选中父节点时，子节点一起选中取消
    select(selection, row) {
      if (
        selection.some((el) => {
          return row.id === el.id
        })
      ) {
        if (row.childList) {
          // 解决子组件没有被勾选到
          this.setChildren(row.childList, true)
        }
      } else {
        if (row.childList) {
          this.setChildren(row.childList, false)
        }
      }
    },
    toggleSelection(row, select) {
      if (row) {
        this.$nextTick(() => {
          this.$refs.table && this.$refs.table.toggleRowSelection(row, select)
        })
      }
    },
    // 选择全部
    selectAll(selection) {
      // tabledata第一层只要有在selection里面就是全选
      const isSelect = selection.some((el) => {
        const tableDataIds = this.tableData.map((j) => j.id)
        return tableDataIds.includes(el.id)
      })
      // tableDate第一层只要有不在selection里面就是全不选
      const isCancel = !this.tableData.every((el) => {
        const selectIds = selection.map((j) => j.id)
        return selectIds.includes(el.id)
      })
      console.log(isSelect, 'isSelect')
      if (isSelect) {
        selection.map((el) => {
          if (el.childList) {
            // 解决子组件没有被勾选到
            this.setChildren(el.childList, true)
          }
        })
      }
      if (isCancel) {
        this.tableData.map((el) => {
          if (el.childList) {
            // 解决子组件没有被勾选到
            this.setChildren(el.childList, false)
          }
        })
      }
      this.$emit('handleSelect', this.tableData)
    }
  }