vue实现表格合并功能

<table >
      <thead>
        <tr>
          <th>设备</th>
          <th>工单</th>
          <th>产品型号</th>
          <th>计划/实际</th>
          <th>状态</th>
          <th>预计生产数</th>
        </tr>
      </thead>
      <tbody>
        <tr v-for="item in testData">
          <td>{{ item.equipmentName }}</td>
          <td>{{ item.doCode}}</td>
          <td>{{ item.materialCode}}</td>
          <td>{{ item.productionNum}}</td>
          <td>{{ item.status}}</td>
          <td>{{ item.pNum}}</td>
        </tr>
      </tbody>
</table>

<table >
      <thead>
        <tr>
          <th>设备</th>
          <th>工单</th>
          <th>产品型号</th>
          <th>计划/实际</th>
          <th>状态</th>
          <th>预计生产数</th>
        </tr>
      </thead>
      <tbody>
        <tr v-for="item in testData">
          <td :rowspan="item.equipmentNamespan" :class="{hidden: item.equipmentNamedis}">{{ item.equipmentName }}</td>
          <td :rowspan="item.doCodespan" :class="{hidden: item.doCodedis}">{{ item.doCode}}</td>
          <td :rowspan="item.materialCodespan" :class="{hidden: item.materialCodedis}">{{ item.materialCode}}</td>
          <td :rowspan="item.productionNumspan" :class="{hidden: item.productionNumdis}">{{ item.productionNum}}</td>
          <td :rowspan="item.statusspan" :class="{hidden: item.statusdis}">{{ item.status}}</td>
          <td :rowspan="item.pNumspan" :class="{hidden: item.pNumdis}">{{ item.pNum}}</td>
        </tr>
      </tbody>
</table>

function combineCell(list) {
  for (field in list[0]) {
    var k = 0;
    while (k < list.length) {
      list[k][field + 'span'] = 1;
      list[k][field + 'dis'] = false;
      for (var i = k + 1; i <= list.length - 1; i++) {
        if (list[k][field] == list[i][field] && list[k][field] != '') {
          list[k][field + 'span']++;
          list[k][field + 'dis'] = false;
          list[i][field + 'span'] = 1;
          list[i][field + 'dis'] = true;
        } else {
          break;
        }
      }
      k = i;
    }
  }
  return list;
}