What are some effective validation tools for my project?

What are some effective validation tools for my project?

There are several great validation tools available, such as Validator.js, Joi, and Yup. What type of validation do you need?

I'm looking for tools to validate user input in a web application.

For web applications, I recommend using libraries like Formik with Yup for form validation, or React Hook Form for a more lightweight solution.

Can you explain how to integrate Yup with Formik?

Sure! You can integrate Yup with Formik by defining a validation schema using Yup and passing it to Formik's validationSchema prop.

Could you provide a code example for that?

Absolutely! Here's a simple example:

import * as Yup from 'yup';
import { Formik, Form, Field, ErrorMessage } from 'formik';

const validationSchema = Yup.object({
  email: Yup.string().email('Invalid email').required('Required'),
});

<Formik
  initialValues={{ email: '' }}
  validationSchema={validationSchema}
  onSubmit={values => { console.log(values); }}
>
  {() => (
    <Form>
      <Field name='email' />
      <ErrorMessage name='email' component='div' />
      <button type='submit'>Submit</button>
    </Form>
  )}
</Formik>