no message

src/components/orderCommon/order-form2.vue

@@ -280,7 +280,8 @@
         <el-col :span="4" v-if="(addMsg.GroupType==1||addMsg.GroupType==2)&&couponList&&couponList.length>0">
           <el-form-item label="优惠券" prop="">
             <el-select v-model="DiscountAmountId" placeholder="选择优惠券"
-            @change="getDiscountAmount">
+            @change="getDiscountAmount"
+            clearable>
               <el-option v-for="item in couponList"
               :label="item.couponName"
               :value="item.id"