Learn how to leverage Formik to create complex and straightforward forms with ease.

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This course focuses on Formik, a JavaScript library for building forms in React. The ability to handle form data is crucial in modern web development, and Formik simplifies the process by allowing you to create forms with less code. You'll learn how to leverage Formik to create complex and straightforward forms with ease.

You'll start with the basics of Formik and gradually work your way up to more advanced topics. You'll learn how to create form fields, handle validation, manage form states, and submit forms. You'll also learn how to use Formik with other popular libraries like Yup for more advanced validation scenarios. 

By the end of this course, you'll be able to create robust and scalable forms in React using Formik. You'll have a deep understanding of how to manage form states, handle form submissions, and validate user input. Data collection is a key element in information technology and will enable you to build better, more organized forms with less code.

Writing React Forms Like a Pro with Formik

## Controlled components

When we create forms with Formik, we create a state that stores the form's data. This means that the value of each field is always deduced from this state, and mutations are controlled by event handlers that communicate with this state. 

In React, this is what we call **controlled components** because everything about the form is controlled by a central state. This state serves as the single source of truth for all the fields in the form.

Beyond working with Formik, we can also create controlled components by creating a state in the component that stores the form's data. In React, we use the `useState` hook to create a state.


# Controlled components

When we create forms with Formik, we create a state that stores the form's data. This means that the value of each field is always deduced from this state, and mutations are controlled by event handlers that communicate with this state. 

In React, this is what we call **controlled components** because everything about the form is controlled by a central state. This state serves as the single source of truth for all the fields in the form.

Beyond working with Formik, we can also create controlled components by creating a state in the component that stores the form's data. In React, we use the `useState` hook to create a state.


Learn about controlled and uncontrolled components in React forms.

Getting Started

Managing the Form State

Validating Forms

Submitting Forms

Assessment: Formik Essentials — From Managing State to Submission

Reducing Boilerplate

Creating Reusable Form Components

Additional Concepts

Final Assessment

Project: Build a Multi-Step Checkout Form with React and Formik

Controlled Components vs. Uncontrolled Components

Controlled components