There are some steps which are necessary to follow to start coding in React JS. The Points which are important to start with are mentioned below -

• 1 - Set Up the Development Environment - We must have to make sure that we have Node.js and npm (Node Package Manager) installed on our system. We can download them from the official Node.js website.
  
  

• 2 - Create a React Project - Open the terminal or command prompt and navigate to the desired directory. Then, we have to run the command mentioned below to create a new React project.
  

npx create-react-app hello-world

• 3 - Navigate to the Project Directory - In this step, we have to move into the project directory by running the following command.
  
  

• 4 - Edit the App.js File - Open the src/App.js file in a text editor of your choice and replace its content with the following code.

  import React from 'react';

    function App() {

      return (
        <div>
          <h1>Hello World!</h1>
        </div>
      );
    }
    export default App;

• 5 - Start the Development Server - To start the development server and see the "Hello World!" application in the browser, we have to run the following command.

npm start