el-table的单元格鼠标移入弹框

<el-table :data="tableData">
	<el-table-column label="开票金额" prop="name" align="center">
                <template slot-scope="scope">
    				<span>{{scope.row.name}}</span>
                </template>
    </el-table-column>
	<el-table-column label="开票金额" prop="num" align="center">
                <template slot-scope="scope">
                    <el-popover trigger="hover" placement="top">
                        <p>姓名:{{scope.row.name}}</p >
                        <p>现金:{{scope.row.num}}</p >
                        <p>刷卡:{{scope.row.num}}</p >
                        <div slot="reference">
                            <el-tag size="medium">{{scope.row.num}}</el-tag>
                        </div>
                    </el-popover>
                </template>
            </el-table-column>
</el-table>