VUE element table 列合并

VUE element table 列合并

效果

关键位置代码

table位置

<el-table v-loading="loading" :data="dataList" row-key="id" max-height="760" :span-method="handleSpanMethod">
	<el-table-column type="index" label="序号" align="center" width="60"></el-table-column>
	<el-table-column prop="batchNo" label="入库批次"></el-table-column>
	<el-table-column prop="deviceName" label="名称"></el-table-column>
	......
</el-table>

javascript

const dataList = ref([]);
const spanArr = ref([]);

// 自定义合并单元格的方法
function handleSpanMethod({ row, column, rowIndex, columnIndex }) {
  if (columnIndex === 1) { // batchNo列的索引
    const rowspan = spanArr.value[rowIndex]
    const colspan = rowspan > 0 ? 1 : 0
    return {
      rowspan,
      colspan
    }
  }
}

组装数据时
listDeviceFlowRk2(queryParams.value).then(res => {
    dataList.value = res.data.list;
    total.value = res.data.total;

    spanArr.value = []
    let pos = 0
    dataList.value.forEach((item, index) => {
      if (index === 0) {
        spanArr.value.push(1)
        pos = 0
      } else {
        if (dataList.value[index].batchNo === dataList.value[index - 1].batchNo) {
          spanArr.value[pos] += 1
          spanArr.value.push(0)
        } else {
          spanArr.value.push(1)
          pos = index
        }
      }
    });

  });