React Getting Started

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React is a JavaScript library for building user interfaces. It was developed by Facebook and is often used for building single-page applications and mobile applications.

To get started with React, you'll need a basic understanding of JavaScript and the modern JavaScript ecosystem. Here are some steps you can follow to get started:

Step 1: Install Node.js and npm: Node.js is a JavaScript runtime that allows you to run JavaScript on the server, and npm is the package manager for Node.js. You can download and install Node.js from the official website (

Step 2: Create a new project: Open a terminal and create a new project directory. Navigate to the project directory and set up a development environment: You can use a code editor like Visual Studio Code or Sublime Text to write your code. You'll also need a web server to run your React application. To set up a development environment using npx, run the following command:

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

This will create a new React project, start a development server, and open a new browser window with your React application running.

Step 3: Write some code: Open the src/App.js file in your code editor and start writing some code. Here's a simple example that renders a "Hello, world!" message:

import React from 'react';

function App() {
  return <h1>Hello, world!</h1>;

export default App;

Learn more: To learn more about React, you can check out the official documentation ( or take an online course or tutorial. There are also many resources available online, including articles, blogs, and video tutorials.

Using npx can be a convenient way to quickly set up a development environment for a small project, without having to install global packages on your system. However, for larger projects, it may be more convenient to install the create-react-app tool globally, so that you can use it from any project directory. To do this, you can run the following command:

npm install -g create-react-app



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