**1.setData后执行一个操作
self.setData({ cartList: app.cartList, discountList: aList,point: res.obj.point, usePoint: res.obj.usePoint},()=>{
//计算操作
self.calcMessage();
});
**1.setData后执行一个操作
self.setData({ cartList: app.cartList, discountList: aList,point: res.obj.point, usePoint: res.obj.usePoint},()=>{
//计算操作
self.calcMessage();
});