【vue+Element】el-table表格合并单元格

当后台管理系统中，表格是非常常见的。表格具有结构清晰、信息明确的特点，可以更快速的获取信息并找到所需内容。你是否遇到需要处理表格单元格合并的情况呢？比如用表格展示一个订单包含多条商品信息时，我们就需要合并单元格。下面就是我用 Element 的 Table 表格实现合并单元格的效果，欢迎大家一起来讨论～

效果：

具体实现代码：

<template>
  <el-table
    :data="tableData"
    border
    ref="table"
    :span-method="arraySpanMethod"
    style="width: 100%"
  >
    <el-table-column prop="userName" label="顾客姓名" width="80"></el-table-column>
    <el-table-column prop="orderNumber" label="订单号" width="130"></el-table-column>
    <el-table-column prop="goodName" label="商品名称"> </el-table-column>
    <el-table-column prop="goodPrice" label="单价（元）"> </el-table-column>
    <el-table-column prop="goodNumber" label="购买数量"> </el-table-column>
    <el-table-column prop="orderPrice" label="订单总价（元）" width="120"></el-table-column>
    <el-table-column prop="orderDate" label="开单时间" width="120"></el-table-column>
    <el-table-column fixed="right" label="操作" width="60">
      <template slot-scope="scope">
        <el-button type="text" size="small">查看</el-button>
      </template>
    </el-table-column>
  </el-table>
</template>

<script>
export default {
  data() {
    return {
      tableData: [
        {
          userId: 1001,
          userName: "唧唧",
          orderNumber: 202404100001,
          orderPrice: 35,
          orderDate: "2024-04-10",
          goods: [
            { goodId: 101, goodName: "薯片", goodNumber: 1, goodPrice: 10.0 },
            { goodId: 102, goodName: "雪糕", goodNumber: 5, goodPrice: 5.0 },
          ],
        },
        {
          userId: 1002,
          userName: "咩咩",
          orderNumber: 202404100002,
          orderPrice: 59.8,
          orderDate: "2024-04-10",
          goods: [
            { goodId: 103, goodName: "抽纸", goodNumber: 2, goodPrice: 29.9 },
          ],
        },
        {
          userId: 1003,
          userName: "汪汪",
          age: 16,
          orderNumber: 202404100003,
          orderPrice: 36.0,
          orderDate: "2024-04-10",
          goods: [
            { goodId: 102, goodName: "雪糕", goodNumber: 2, goodPrice: 5.0 },
            { goodId: 102, goodName: "矿泉水", goodNumber: 2, goodPrice: 3.0 },
            { goodId: 102, goodName: "口罩", goodNumber: 10, goodPrice: 2.0 },
          ],
        },
      ],
      arr: [],
      spanTableRow: {}
    }
  },
  mounted() {
    this.initData(this.tableData);
  },
  methods: {
    initData(data) {
      const tempdata = data.filter((item) => item.goods);
      let list = [];
      this.arr = [];
      let spanTableRow = {};
      tempdata.forEach((item, i, data) => {
        if (item.goods.length == 0) {
          list.push(item);
        } else {
          item.goods.forEach((e, j) => {
            list.push({
              ...item,
              ...e
            });
          });
        }
        let row = item.goods.length || 1;
        if (item && item.orderNumber) {
          spanTableRow[item.orderNumber] = {
            row: row,
            isSpan: -1,
          };
        }
      });
      this.spanTableRow = Object.assign({}, spanTableRow);
      this.tableData = list;
      this.tableData.forEach((item) => {
        item.id = item.orderNumber;
      });
      this.$nextTick(() => {
        this.$refs.table.doLayout();
      });
    },
    arraySpanMethod({ row, column, rowIndex, columnIndex }) {
      if (![2, 3, 4].includes(columnIndex)) {
        if ( this.spanTableRow[row.orderNumber] && (this.spanTableRow[row.orderNumber].isSpan == rowIndex || this.spanTableRow[row.orderNumber].isSpan === -1) ) {
          this.spanTableRow[row.orderNumber].isSpan = rowIndex;
          let rowspan = this.spanTableRow[row.orderNumber].row;
          return [rowspan, 1];
        } else {
          return [0, 0];
        }
      }
    }
  }
}
</script>