Getting started with React JS Hello World

“Hello, World!” project using React.js:

Step 1: Set Up the Project

To get started, you’ll need to have Node.js installed on your computer. Follow these steps:

Install Node.js: Download and install Node.js from the official website (https://nodejs.org).
Create a new directory for your project.
Open a terminal or command prompt and navigate to the project directory.
Initialize a new npm project by running the following command:

npm init -y

Install React and React DOM by running the following command:

npm install react react-dom

Step 2: Create the React Component

Next, you’ll create a simple React component that displays the “Hello, World!” message.

Create a new file called App.js in the project directory.
Open App.js in a code editor and add the following code:

import React from 'react';

function App() {
  return (
    <div>
      <h1>Hello, World!</h1>
    </div>
  );
}

export default App;

Step 3: Create the Entry Point

Now, you need to create the entry point file that will render your React component.

Create a new file called index.js in the project directory.
Open index.js in a code editor and add the following code:

import React from 'react';
import ReactDOM from 'react-dom';
import App from './App';

ReactDOM.render(<App />, document.getElementById('root'));

Step 4: Create the HTML File

Finally, create an HTML file that will serve as the entry point for your React application.

Create a new file called index.html in the project directory.
Open index.html in a code editor and add the following code:

<!DOCTYPE html>
<html>
<head>
  <title>Hello, World!</title>
</head>
<body>
  <div id="root"></div>
  <script src="./dist/index.js"></script>
</body>
</html>

Step 5: Build and Run the Project

Open a terminal or command prompt and navigate to the project directory.
Build the project by running the following command:

npm run build

Start a local development server by running the following command:

npm start

Open your web browser and visit http://localhost:8080. You should see the “Hello, World!” message displayed on the page.

Congratulations! You have successfully created a “Hello, World!” project using React.js. This is a basic example to help you understand the structure of a React application. From here, you can build more complex applications by creating additional components and implementing functionality.