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

1 vote239 views1 answer
Typescript express next middleware type
Javascript Express
17 votes230 views6 answers
Express js
Javascript Express
24 votes252 views4 answers
Npm express
Javascript Express
1 vote199 views1 answer
Req.params.id express
Javascript Express
0 vote218 views1 answer
React paypal express checkout
Javascript Express
24 votes247 views2 answers
Express get query params from url
Javascript Express
0 vote281 views1 answer
Set 404 handling via express in node
Javascript Express
0 vote242 views1 answer
Express js continous GET /json/version
Javascript Express
0 vote238 views1 answer
Express formidable
Javascript Express
-1 vote240 views1 answer
404 responses in express
Javascript Express