NodeJS返回

Question

我正在试图找出使用NodeJS处理错误的最佳方法。如果用户注册或信用卡被接受时出错，我需要返回（或显示错误而不是重定向）。问题是如果我尝试使用多个res.redirect，我会收到错误“如果已经设置了标题，则无法设置标题”。我该如何解决这个问题。我已经显示了我想在下面重定向的位置。

谢谢！

app.post('/quiz', function(req, res) {


        var token = req.body.stripeToken; // Using Express
        var charge = stripe.charges.create({
         amount: 749,
         currency: "usd",
         description: "Example charge",
         source: token,

        }, function(err, charge) {
            if(err) {
              console.log('Did not charge or create error' +  err);

           // return res.redirect('/');
        //I WANT TO RETURN TO HOME HERE IF THERES AN ERROR
       //I WANT TO RETURN TO HOME HERE IF THERES AN ERROR
       //I WANT TO RETURN TO HOME HERE IF THERES AN ERROR
       //I WANT TO RETURN TO HOME HERE IF THERES AN ERROR
            }
            console.log('charged')
            var user = new User({
          username: req.body.username,
          email: req.body.email,
          password: req.body.password,
          datapoint: req.body.datapoint
        })

      user.save(function(err) {
        console.log('this is the problem' + ' ' + err)
        // return res.redirect('/');
       //I WANT TO RETURN TO HOME HERE IF THERES AN ERROR
       //I WANT TO RETURN TO HOME HERE IF THERES AN ERROR
       //I WANT TO RETURN TO HOME HERE IF THERES AN ERROR
       //I WANT TO RETURN TO HOME HERE IF THERES AN ERROR
    });

            req.logIn(user, function(err) {
              if(err) {
                console.log(err);
              }
              console.log('all looks good')
              // If everything looks good I want to redirect to the next page
              // If everything looks good I want to redirect to the next page
              // If everything looks good I want to redirect to the next page
              // If everything looks good I want to redirect to the next page
              // res.redirect('/jobquiz');
            });
        });
      });