Introduction To The Form Validation App in React

React is a JavaScript library for building interactive user interfaces. It follows a component-based approach, meaning applications are built from small, reusable pieces of UI logic. React also updates the DOM efficiently, which makes it ideal for creating dynamic forms, dashboards, and single-page applications.

In this project, we will build a Form Validation App with React and Vite. The app collects a user’s name and interests, validates the inputs, and then generates personalized hobby suggestions based on a dataset. Along the way, you will learn how to manage state, handle form input, fetch external data, and apply basic validation logic.

This project is designed to introduce you to React fundamentals while also demonstrating how to build a form that provides real-time, meaningful feedback to users. By the end, you’ll deploy the app so it’s live online.

What is the Form Validation App and its purpose?

A Form Validation App is a simple application where users enter data into a form, and the app ensures the inputs are valid before using them. In our project, the user will:

• Enter their name.
• Enter their interests (comma-separated).
• Submit the form.

Once submitted, the app will:

• Check that inputs are not empty.
• Process the interests into keywords.
• Compare those interests against a dataset of hobbies.
• Suggest hobbies that match the user’s inputs.

The main purpose of this app is to teach you how React components handle forms, how validation works in practice, and how to provide user-friendly results dynamically.

It also introduces the concept of controlled components in React, where form inputs are linked to React state so that the app always knows their current values.

Aim of the Project

By completing this project, you will gain hands-on experience in:

• Setting up a React project with Vite.
• Creating and styling components with JSX and CSS.
• Handling user input through controlled form elements.
• Using the useState and useEffect hooks for state management and data fetching.
• Writing custom logic for form validation and generating suggestions.
• Fetching external data from a JSON file placed in the public directory.
• Displaying dynamic lists in React using the map() function.
• Deploying your project so others can interact with it online.

The final outcome will be a fully functional, styled application where a user types in their details, submits the form, and immediately sees a set of suggested hobbies tailored to their interests.

Project Workflow

Here’s the step-by-step workflow you’ll follow in this module and beyond:

1. Set up the environment using Vite and create the base React project.
2. Build the form UI with fields for name and interests.
3. Control the inputs using React state.
4. Write validation logic to ensure fields are filled before submission.
5. Fetch the dataset of hobbies from a JSON file.
6. Process and filter suggestions based on user inputs.
7. Display the suggestions dynamically on the page.
8. Style the app with CSS for a clean, responsive layout.
9. Deploy the project online using a free hosting service.

This project gives you a complete overview of building, structuring, and hosting a modern React app, from scratch to deployment.