el-table中的span-method

<el-table
    :span-method="arraySpanMethod"
    // ...
    />

arraySpanMethod({ row, column, rowIndex, columnIndex }) {
      const { nodeNum, count, nodeName, nodeRemark } = row
      if ([0, 1].includes(columnIndex)) { // 只合并第一列和第二列
        switch (nodeNum) {
          case 0:
            return columnIndex === 0 ? [1, 2] : [0, 0]
          case 1:
            return columnIndex === 0 ? [count, 2] : [0, 0]
          case 2:
            return columnIndex === 0 ? [count, 1] : [1, 1]
          case 3:
            return columnIndex === 0 ? [count, 1] : [1, 1]
          case 8:
            return columnIndex === 0 ? [count, 1] : [1, 1]
          case 12:
            return columnIndex === 0 ? [count, 1] : [1, 1]
          case 14:
            return columnIndex === 0 ? [count, 1] : [1, 1]
          case 22:
            return columnIndex === 0 ? [count, 1] : [1, 1]
          default:
            return nodeName === nodeRemark
              ? columnIndex === 0 ? [1, 2] : [0, 0]
              : [1, 1]
        }
      }
    },