To create a new React app, you can start by using the create-react-app command-line tool. This tool sets up a new React project with a basic project structure and preconfigured settings.

If you have Node.js and npm installed on your machine, you can run the following command in your terminal to create a new React app:

1npx create-react-app payment-app

This will create a new directory called payment-app and install all the necessary dependencies for your React app.

After the installation is complete, navigate to the project directory:

1cd payment-app

You can now start the development server by running the following command:

1npm start

This will start the development server and open your app in the browser.

Now let's explore the project structure of a basic React app:

• index.html: The entry point of the app, where the React app is rendered.

• src/: This directory contains all the source code for your app.

  • index.js: The main JavaScript file that imports the App component and renders it.
  • App.js: The main component of your app.
  • App.css: CSS styles for the App component.

• public/: This directory contains any public assets, such as images or fonts, that you want to include in your app.

This is just a basic project structure for a React app. As your app grows, you can organize your code into components and create additional files and folders as needed.

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// Replace with relevant code

import React from 'react';

import ReactDOM from 'react-dom';

​

function App() {

  return (

    <div>

      <h1>Welcome to My Payment App</h1>

      <p>Explore the features of our payment app.</p>

    </div>

  );

}

​

ReactDOM.render(

  <React.StrictMode>

    <App />

  </React.StrictMode>,

  document.getElementById('root')

);