bugfixed

pages/index/index.axml

@@ -238,7 +238,7 @@
       <view class="coupon-top">
         <view class="coupon-back-container" onTap="convertCouponClose" a:if="{{discCouponState == 1}}">
           <image class="coupon-back-icon" mode="aspectFit" src="/images/icon_back.png"/>
-          <text class="coupon-back-text">返回</text>
+          <text class="coupon-back-text" onTap="couponBack">返回</text>
         </view>
         <view class="coupon-title" a:if="{{discCouponState == 1}}">优惠券</view>
         <view></view>

pages/index/index.js

@@ -883,7 +883,6 @@ Page({
           let quantitytemp = item.quantity
           item.quantity = quantitytemp - 1
           newGoods.push(item);
-
         }
       } else {
         newGoods.push(item);
@@ -923,6 +922,9 @@ Page({
     })
 
     pricetemp = this.fen2Yuan(pricetemp)
+    if(pricetemp < this.data.discCouponPrice){
+      this.setData({ discCouponPrice: 0 })
+    }
     this.setData({ totalQuantity: quantitytemp, totalPrice: pricetemp })
     //数据同步到前屏
     this.sendGoodInfoToFront()