<el-table :data="tableData" style="width: 100%;" @selection-change="handleSelectionChange" ref="multipleTable">
             <el-table-column align="center" type="selection" width="55" fixed></el-table-column>
        <el-table-column align="center" prop="name" label="方案名称" width='120'>
          <!-- <template slot-scope="scope">{{scope.row.beginCardNo}} - {{scope.row.endCardNo}}</template> -->
        </el-table-column>
        <el-table-column align="center" prop ="type" label="兑换类型">
          <!-- <template slot-scope="scope">{{scope.row.cardTypeName}}</template> -->
        </el-table-column>
        <el-table-column align="center"  label="兑换个数" width="160px" prop ="exchangeNum">
          <template slot-scope="scope">
             <!-- <el-col :span="16"> -->
            <el-input placeholder="请输入兑换个数" v-model="scope.row.exchangeNum" @change="change"></el-input>
             <!-- </el-col> -->
          </template>
        </el-table-column>
        <!--<el-table-column align="center" prop="" label="未配送数量"></el-table-column>-->
        <el-table-column align="center" label="消耗积分" prop="costPointsNum">
           <template slot-scope="scope">{{scope.row.exchangeNum*scope.row.costPointsNum}}</template>
          <!-- <template slot-scope="scope">{{scope.row.deposit | money}}</template> -->
        </el-table-column>
        <!-- <el-table-column align="center" label="操作" fixed="right">
          <template slot-scope="scope">
            <a class="operation" @click="deleteItem(scope.row)" v-authority="508003">删除</a>
          </template>
        </el-table-column> -->
      </el-table>

在handleSelectionChange方法中实现把 选中的一个或者多个行的时候把 costPointsNum exchangeNum schemeId 这几个参数传入到detaiList里面 形成如下形式的数组？

{
  
  "detailList": [
    {
      "costPointsNum": 0,
      "exchangeNum": 0,
      "schemeId": 0
    }，{
      "costPointsNum": 0,
      "exchangeNum": 0,
      "schemeId": 0
    }
  ],
 
}