Creating Our First App in React.js 19

Follow these steps to create and run your first React 19 application.

📌 What to Learn Before React 19

Before diving into React 19, it is essential to understand the following technologies:

• Basic HTML, CSS, and JavaScript
• ES6+ Features (such as arrow functions, spread/rest operators, and async/await)
• Fundamentals of Node.js and npm (Node Package Manager)
• Basic understanding of Git and version control
• Concepts of modular JavaScript and reusable components

🚀 5 Tips to Maximize Your React Course in 2025

To get the most out of your React learning experience, follow these tips:

• Practice Daily: Build small projects regularly to reinforce your understanding.
• Understand React Hooks: Learn hooks like useState, useEffect, and useContext thoroughly.
• Explore State Management: Gain knowledge of Redux, Zustand, or the Context API.
• Follow the Official Documentation: Always refer to the latest React documentation for updates.
• Join the React Community: Participate in forums, GitHub discussions, and online coding groups.

📌 Step 1: Install Vite

Open your terminal and run the following command:

            npm create vite@latest my-react-app --template react
        

📌 Step 2: Navigate to Your Project

Move into your newly created project folder:

            cd my-react-app
        

📌 Step 3: Install Dependencies

Install the necessary dependencies including React 19:

            npm install
        

📌 Step 4: Start the Development Server

Run the following command to start your development server:

            npm run dev
        

📌 Step 5: Open the Project in a Code Editor

Use a code editor like VS Code and open your project folder:

            code .
        

📌 Step 6: Modify the App Component

Open the src/App.jsx file and update it with the following content:

            
import React from 'react';

function App() {
    return (
        

            
Hello, React 19!
            
This is your first React app running on Vite.
        
    );
}

export default App;
            
        

✅ Your First React 19 App is Ready!

Now, visit the localhost link shown in the terminal to see your first React 19 application in action.