A Simple Introduction to React

Introduction to ReactJS

React has been designed from the start for gradual adoption, and you can use as little or as much React as you need. Whether you want to get a taste of React, add some interactivity to a simple HTML page, or start a complex React-powered app, the links in this section will help you get started.

If you’re interested in playing around with React, you can use an online code playground. Try a template on platforms like Codepen, Sandbox and Stackblitz.

Create React App is a comfortable environment for learning React and is the best way to start building a new single-page application in React.

The main objective of ReactJS is to develop User Interfaces (UI) that improves the speed of the apps. It uses virtual DOM (JavaScript object), which improves the performance of the app. The JavaScript virtual DOM is faster than the regular DOM.

What is ReactJS?

ReactJS is an open-source JavaScript library used to create user interfaces in a declarative and efficient way. It is a component-based front-end library responsible only for the view layer of a Model View Controller (MVC) architecture. React is used to create modular user interfaces and promotes the development of reusable UI components that display dynamic data, user can use it to create dynamic single page applications. Some people refer to it as library, some say it's a framework.