How do I integrate validation libraries in React?

How do I integrate validation libraries in React?

You can integrate validation libraries like Formik or React Hook Form. Which one are you interested in?

I'm interested in Formik. How do I set it up?

To set up Formik, first install it using npm or yarn. Then, create a Formik component and define your initial values and validation schema.

Can you show me a simple example?

Sure! Here's a basic example:

import { Formik, Form, Field, ErrorMessage } from 'formik';

const MyForm = () => {
  return (
    <Formik
      initialValues={{ name: '' }}
      validate={values => {
        const errors = {};
        if (!values.name) {
          errors.name = 'Required';
        }
        return errors;
      }}
      onSubmit={(values, { setSubmitting }) => {
        console.log(values);
        setSubmitting(false);
      }}
    >
      {({ isSubmitting }) => (
        <Form>
          <Field type="text" name="name" />
          <ErrorMessage name="name" component="div" />
          <button type="submit" disabled={isSubmitting}>Submit</button>
        </Form>
      )}
    </Formik>
  );
};

This will create a simple form with validation.