Express validator

npm install --save express-validator

check('Username', 'Username contains non-alphanumeric characters - not allowed.').isAlphanumeric()

// ...rest of the initial code omitted for simplicity.
const { body, validationResult } = require('express-validator');

app.post(
  '/user',
  // username must be an email
  body('username').isEmail(),
  // password must be at least 5 chars long
  body('password').isLength({ min: 5 }),
  (req, res) => {
    // Finds the validation errors in this request and wraps them in an object with handy functions
    const errors = validationResult(req);
    if (!errors.isEmpty()) {
      return res.status(400).json({ errors: errors.array() });
    }

    User.create({
      username: req.body.username,
      password: req.body.password,
    }).then(user => res.json(user));
  },
);

npm install --save express-validator

npm install express-validator

Similar codes

24 votes202 views5 answers
Express route parameters
Javascript Express
0 vote195 views2 answers
Csurf in express
Javascript Express
2 votes172 views2 answers
Res.locals in express
Javascript Express
1 vote159 views2 answers
Http to https express js
Javascript Express
1 vote170 views1 answer
Express send raw html
Javascript Express
1 vote171 views1 answer
Accept Post with no midleWare express
Javascript Express
0 vote178 views1 answer
Express octet stream
Javascript Express
0 vote183 views1 answer
Express Router()
Javascript Express
0 vote181 views1 answer
Express add delay
Javascript Express
0 vote202 views1 answer
Expressjs cheat sheet
Javascript Express