关于表格合并span-method方法的补充(表格数据由后台动态返回)

getIndex () {
      let arr = []
      let s = 0
      let table = this.tableData6
      let getTable = []
      table.forEach((item, i, data) => {
        if (arr.length) {
          s = arr[arr.length - 1].row + data[i - 1].company.length
        }
        arr.push({
          row: s,
          index: item.company.length
        })
        if (item.company && item.company.length) {
          item.company.forEach(subItem => {
            getTable.push({
              id: item.id,
              region: item.region,
              type: item.type,
              company: subItem.name
            })
          })
        }
      })
      this.arr = arr
      this.tableData6 = getTable
    },