formik 2.4.5

Formik is a renowned npm package designed for building effective forms in React. It simplifies the complex process of handling form states like handling inputs, validation, errors, and form submission. Eliminating the repetitive and tedious tasks involved in creating forms, Formik paves the way for a streamlined web development process. The package is recognized for its blazing-fast speed, contributing to faster page load times and thus improving overall website performance metrics.

Formik can be seamlessly integrated with your React project using npm or yarn. To install the package, you need to run the command npm install formik or yarn add formik. Below is a simple example of how you might use Formik to create a form:

import React from 'react';
import { Formik, Field, Form } from 'formik';

// Your validation function
const validate = (values) => {
  const errors = {};
  if (!values.email) {
    errors.email = 'Required';
  }
  return errors;
};

// Your component
const MyForm = () => (
  <div>
    <h1>My Form</h1>
    <Formik
      initialValues={{ email: '' }}
      validate={validate}
      onSubmit={(values, { setSubmitting }) => {
        setTimeout(() => {
          alert(JSON.stringify(values, null, 2));
          setSubmitting(false);
        }, 400);
      }}
    >
      {({ isSubmitting }) => (
        <Form>
          <Field type="email" name="email" />
          <button type="submit" disabled={isSubmitting}>
            Submit
          </button>
        </Form>
      )}
    </Formik>
  </div>
);

export default MyForm;

In this example, you're first importing the required entities from the 'formik' package. Then you're creating a validation function and a form component. The form is then included in the component which uses formik <Formik> with some essential properties like initialValues, validate, and onSubmit.

For detailed information and additional Formik usage examples, you can head over to the official Formik documentation page at https://formik.org. The webpage provides a comprehensive guide on everything you need to know about Formik, starting from installation to handling complex form structures. Therefore, for getting started with Formik or diving deeper into the understanding of the package, the documentation is the ultimate resource to rely upon.