<el-select
v-model="form.coupon"
placeholder="请选择优惠券类型"
@change="selectCoupon"
>
<el-option
v-for="(item, index) in couponList"
:key="index"
:label="`${item.agioType} ${item.day}天`"
:value="item.dId"
></el-option>
</el-select>