修改了精度

pages/index/index.js

@@ -987,7 +987,8 @@ Page({
 
     //后屏跳转
     this.goPage('waitoperate');
-    var amount = this.data.totalPrice - this.data.discCouponPrice;
+    var miyapay = require("/utils/miyapay4.js");
+    var amount =  miyapay.fen2Yuan(miyapay.yuan2Fen(this.data.totalPrice)-miyapay.yuan2Fen(this.data.discCouponPrice));
     this.setData({
       waitOperateAmount: amount,
     });