el-table 合并相同内容单元格

微信截图_20200915081644.png
<!DOCTYPE html>
<html lang="en">
<head>
  <meta charset="UTF-8">
  <meta name="viewport" content="width=device-width, initial-scale=1.0">
  <link rel="stylesheet" href="https://unpkg.com/element-ui/lib/theme-chalk/index.css">
  <title></title>
  <style>
    
  </style>
</head>
<body>
  <div id="app">
    <el-table
      :span-method="arraySpanMethod"
      :data="tableData"
      border
      style="width: 100%">
      <el-table-column
        prop="date"
        label="日期"
        width="180">
      </el-table-column>
      <el-table-column
        prop="name"
        label="姓名"
        width="180">
      </el-table-column>
      <el-table-column
        prop="address"
        label="地址">
      </el-table-column>
    </el-table>
  </div>
  <script src="https://cdn.jsdelivr.net/npm/vue/dist/vue.js"></script><!-- 引入样式 -->
  <script src="https://unpkg.com/axios/dist/axios.min.js"></script>

  <!-- 引入组件库 -->
  <script src="https://unpkg.com/element-ui/lib/index.js"></script>
  <script>
    var app = new Vue({
      el: '#app',
      data: {
        tableData: [{
          date: '2016-05-02',
          name: '王小龙',
          address: '上海市普陀区金沙江路 1 弄'
        }, {
          date: '2016-05-02',
          name: '王小龙',
          address: '上海市普陀区金沙江路 2 弄'
        }, {
          date: '2016-05-02',
          name: '王小虎',
          address: '上海市普陀区金沙江路 3 弄'
        }, {
          date: '2016-05-02',
          name: '王小虎',
          address: '上海市普陀区金沙江路 5 弄'
        }, {
          date: '2016-05-02',
          name: '王小虎',
          address: '上海市普陀区金沙江路 4 弄'
        }],
        mergeObj: {}
      },
      methods: {
        arraySpanMethod ({ row, column, rowIndex, columnIndex }) {
          if (this.mergeObj[column.property][rowIndex]) {
            return {
              rowspan:this.mergeObj[column.property][rowIndex],
              colspan:1
            }
          } else {
            return {
              rowspan: 0,
              colspan: 0
            }
          }
        },
        
      },
      mounted () {
        let numerical = 0;
        for (let key in this.tableData[0]) {
          this.mergeObj[key] = []
          this.tableData.forEach((item,index) => {
            if (index === 0) {
              this.mergeObj[key].push(1)
            } else {
              if (item[key] === this.tableData[index-1][key]) {
                this.mergeObj[key][numerical] += 1;
                this.mergeObj[key].push(0)
              } else {
                numerical = index
                this.mergeObj[key].push(1)
              }
            }
          })
        }
      }
    })
  </script>
</body>
</html>