el-table加合计

<el-table :data="tableListData" :header-cell-style="{
            'background-color': '#F3F3F3',
            height: '40px',
            padding: 0,
          }" :summary-method="getSummaries" show-summary>

<el-table-column :show-overflow-tooltip="true" :label="item.rebate_name" class-name="custom-cell" align="center" v-for="(item,index) in tabData" :key="index">
		    <el-table-column :show-overflow-tooltip="true"  class-name="custom-cell" :prop="'estimate_amount_'+item.id" label="暂估" min-width="110">
		      <template slot-scope="scope">
		        <el-input v-if="scope.row.status" size="mini" placeholder="暂估" v-model="scope.row['estimate_amount_'+item.id]" clearable></el-input>
		        <span v-else>{
   {scope.row['estimate_amount_'+item.id]}}</span>
		      </template>
		    </el-table-column>
		    <el-table-column :show-overflow-tooltip="true" class-name="custom-cell" :prop="'actual_amount_'+item.id" label="实际" min-width="110">
		      <template slot-scope="scope">
		        <el-input v-if="scope.row.status" size="mini" placeholder="实际" v-model="scope.row['actual_amount_'+item.id]" clearable></el-input>
		        <span v-else>{
   {scope.row['actual_amount_'+item.id]}}</span>
		      </template>
		    </el-table-column>
		  </el-table-column>
</el-table>

// 合计
	getSummaries(param) {
	  const { columns, data } = param;
	  const sums = [];
	  columns.forEach((column, index) => {
	    if (index === 0) {
	      sums[index] = "合计";
	      return;
	    }
	    let arr = Object.keys(this.totalObj);
		// console.log(arr)
		// console.log(column)
        //column.property 是跟el-table-column中prop的值一样的
	    if (arr.length) {
	      arr.forEach((item) => {
	        switch (column.property) {
	          case item:
	            sums[index] = this.totalObj[item];
	            break;
	          default:
	            break;
	        }
	      });
	    }
	  });
	  return sums;
	},

.el-table__footer-wrapper tbody td.custom-cell {
  border-right: 1px solid #DBDFE5 !important;
}