What are some good validation libraries for JavaScript?

What are some good validation libraries for JavaScript?

There are several great validation libraries for JavaScript. Some popular ones include Joi, Validator.js, and Yup. Do you have a specific use case in mind?

I'm building a form and need to validate user input.

For form validation, I recommend using Yup or Formik with Yup for schema validation. They work well together and are easy to integrate.

Can you give me an example of how to use Yup?

Sure! Here's a simple example:

import * as Yup from 'yup';

const validationSchema = Yup.object().shape({
  email: Yup.string().email('Invalid email').required('Email is required'),
  password: Yup.string().min(6, 'Password must be at least 6 characters').required('Password is required'),
});

This schema validates an email and a password.

That looks great! Thanks for the help!

You're welcome! If you have any more questions about validation or anything else, feel free to ask!