Building Your First React Application: A Step-by-Step Tutorial

React is a popular JavaScript library for building user interfaces. In this tutorial, we’ll create your first React application from scratch.

Prerequisites

Basic JavaScript knowledge
Node.js installed on your computer
A code editor (VS Cod…


This content originally appeared on DEV Community and was authored by Hardik Kanajariya

React is a popular JavaScript library for building user interfaces. In this tutorial, we'll create your first React application from scratch.

Prerequisites

  • Basic JavaScript knowledge
  • Node.js installed on your computer
  • A code editor (VS Code recommended)

Getting Started

Step 1: Create React App 

npx create-react-app my-first-app
cd my-first-app
npm start

Step 2: Understanding the Structure

  • src/ - Your application code
  • public/ - Static files
  • package.json - Dependencies

Step 3: Create Your First Component 

function Welcome() {
  return <h1>Hello, React!</h1>;
}

Step 4: Add State 

import { useState } from 'react';

function Counter() {
  const [count, setCount] = useState(0);
  return (
    <button onClick={() => setCount(count + 1)}>
      Count: {count}
    </button>
  );
}

Conclusion

Congratulations! You've built your first React app. Keep experimenting and building!


This content originally appeared on DEV Community and was authored by Hardik Kanajariya


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Hardik Kanajariya | Sciencx (2025-10-11T18:30:00+00:00) Building Your First React Application: A Step-by-Step Tutorial. Retrieved from https://www.scien.cx/2025/10/11/building-your-first-react-application-a-step-by-step-tutorial/

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