What is React JS?

Welcome to Tutorial #29 where we will be diving into the world of React JS. React JS is a popular JavaScript library for building user interfaces. It was created by Facebook and has since gained widespread adoption in the development community due to its efficiency and flexibility.

React JS allows developers to build reusable UI components and manage the state of their applications with ease. It also facilitates the building of single-page applications with its virtual DOM approach, which helps in optimizing performance and rendering updates efficiently.

Create Our First React App

Now that we have an understanding of what React JS is, let’s create our first React app. To begin, you will need to have Node.js and npm (Node Package Manager) installed on your machine. Once you have those set up, you can proceed with the following steps:

1. Open your terminal and navigate to the directory where you want to create your React app.
2. Run the following command to create a new React app:

npx create-react-app my-first-react-app

This command will create a new directory called my-first-react-app with all the necessary files and configurations for a basic React app.

Once the app is created, navigate into the directory and start the development server by running the following command:

cd my-first-react-app
npm start

This will start the development server and open your new React app in your default web browser. You should see a basic welcome page with some default React content.

Now you’re ready to start building your own React app and exploring the powerful features that React JS has to offer!