逻辑修改

pages/home.vue

@@ -174,6 +174,8 @@
 			},
 			// 已领取优惠券按钮
 			goBuy(){
+				this.timerNum = 3
+				clearInterval(this.timer)
 				uni.navigateToMiniProgram({
 					appId: 'wx91d27dbf599dff74', // 跳转目标小程序的id
 					path: 'pages/item/detail/detail?sku=100023585323', // 目标小程序的页面路径
@@ -183,13 +185,10 @@
 					success:(res)=> {
 						// 打开成功
 						this.pooupCoupon = false
-						this.timerNum = 3
-						clearInterval(this.timer)
+						
 					},
 					fail:()=>{
 						this.pooupCoupon = false
-						this.timerNum = 3
-						clearInterval(this.timer)
 					}
 				})
 			},