React is a free, open-source front-end JavaScript library for building user interfaces using UI components. The community behind React is called Meta. The project was created to make it easier to build and maintain websites, applications, and mobile apps. Its primary purpose is to provide a framework for building applications and websites that use this framework. The React team is committed to making the React library better, faster, and more flexible for developers.
React JS uses the virtual DOM, a JavaScript tree data structure that can be rendered from HTML. This helps the framework render pages much faster, since the DOM is never rendered to the user. The virtual DOM is always updated and stays in memory. Because React elements are simple objects, they’re cheap to create and maintain. In addition to being lightweight, React is fast and responsive. Those who have used it will find it a breeze to build and maintain.
When you’re developing a website or application, you’ll likely run into the problem of how to maintain the code. While it may be tempting to use a framework like AngularJS to create your web pages, React is more versatile and allows you to use more than one framework. The framework is designed to be cross-platform and compatible with other frameworks, including Angular. React can be used on both the client-side and server-side.
Coding React 