freeCodeCamp/guide/english/certifications/front-end-libraries/react/index.md

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title: React
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## React

![React](https://upload.wikimedia.org/wikipedia/commons/thumb/a/a7/React-icon.svg/200px-React-icon.svg.png)

React or ReactJS is a front-end library which is used to create beautiful, reusable and interactive User Interfaces.

React is written in JavaScript and JSX. It is designed with reusability in mind and follows a component based pattern, which means write once and use infinitely.

It is available as a CDN for browser based development or as a npm package for Command line shell based editing.

React has been developed under the Facebook Open Source project, and is actively maintained by the Open Source community.

#### More Information:
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1. [React](https://reactjs.org/)
2. [React Open Source page](https://github.com/facebook/react/)
3. [React Forum](https://discuss.reactjs.org/)