How can I use built-in validators in Express Validator?

What are built-in validators in Express Validator?

Built-in validators are pre-defined functions in Express Validator that help validate user input, such as checking if a field is empty or if an email is valid.

How do I implement a built-in validator for an email field?

You can use the isEmail() validator. For example, in your route handler, you can use check('email').isEmail() to validate the email field.

Can I chain multiple validators together?

Yes, you can chain validators. For instance, you can use check('email').isEmail().notEmpty() to ensure the email is both valid and not empty.

What happens if validation fails?

If validation fails, you can handle the errors in your middleware and send a response indicating what went wrong.