vue+elementに一括削除機能を実装する方法

<p class="row mt30 pl15">
   <el-button type="warning" @click="delGroup" :disabled="this.sels.length === 0">批量删除</el-button><!--disabled值动态显示，默认为true,当选中复选框后值为false-->
  </p>
  <el-table :data="tableList" :fit="true" @row-click="handleCurrentChange" @selection-change="selsChange" ref="table">
   <el-table-column type="selection" width="55" reserve-selection=""></el-table-column>
   <el-table-column prop="id" label="ID" width="150" class-name="bg_blue"></el-table-column>
   <el-table-column prop="cpsProductId" label="商品ID" width="200"></el-table-column>
   <el-table-column prop="productName" label="商品名称" width="200" show-overflow-tooltip></el-table-column>
   <el-table-column label="图片" width="200">
    <template scope="data1">
     <img :src="data1.row.imgsrc" class="mt10 mb10">
    </template>
   </el-table-column>
   <el-table-column label="操作" align="center">
    <template scope="scope">
     <el-button type="primary" size="small" @click="onEditSku(scope.row.id)">编辑</el-button>
     <el-button size="small" @click="onDelProduct(scope.row.id)">删除</el-button>
    </template>
   </el-table-column>
  </el-table>

<script> 
export default { 
 name: &#39;product&#39;, 
 mounted() { 
  this.onSearch() 
 }, 
 data() { 
  return { 
   sels: [],//选中的值显示 
   tableList: [], 
   total: 0, 
   start: 0, 
   size: 10 
  } 
 }, 
 methods: { 
  selsChange(sels) { 
   this.sels = sels 
  }, 
  delGroup() { 
   var ids = this.sels.map(item => item.id).join()//获取所有选中行的id组成的字符串，以逗号分隔 
  }, 
  handleCurrentChange(row, event, column) { 
   this.$refs.table.toggleRowSelection(row) 
  } 
 } 
} 
</script>