TypeError：无法读取未定义阅读“电子邮件”的属性

Question

router.post('/login', async (res, req) => {
    const{error} = loginValidation(req.body);
    if (error) return res.status(400).send(error.details[0].message);
    
    //user validation
    const user = await User.findOne({ email: req.body.email });
    if (!user) return res.status(400).send("Email doesn't exists");

    //checking password
    const validPass = await bcrypt.compare(req.body.password, user.password);
    if (!validPass) return res.status(400).send('Invalid Password')
    
    res.send("logged in");
});

The code is showing error ins this line body.email part:

const user = await User.findOne({ email: req.body.email });

vscode error image

Answer 1

You should do

res.body.email on the place of req.body.email according to your code

Because in post async function you wrote (res, req) instead of (req, res)