修复bug

pages/jiuzhai/jz_Reserve.vue

@@ -539,6 +539,7 @@
 			closeCouponHandler(e) {
 				if (e != -1) {
 					this.useCouponId = e;
+					if(this.useCouponId){
 						this.currentCoupon = this.couponList.find(x => x.id == this.useCouponId)
 						if (this.currentCoupon.couponsType == 1) {
 							this.currentCoupon.discountMoney = this.currentCoupon.denomination
@@ -546,6 +547,9 @@
 							this.currentCoupon.discountMoney = (parseFloat(this.price) * (1 - parseFloat(this.currentCoupon.denomination / 10)))
 								.toFixed(2)
 						}
+					}else{
+						this.currentCoupon.discountMoney = 0
+					}
 				}
 				this.showCoupon = false;
 			},