what does react do code example

Example 1: what is react

This is a formatted version of Komadori's answer 
(https://tinyurl.com/Komadori)
React is a JavaScript library for building user interfaces. 
It is maintained by Facebook and a community of 
individual developers and companies. 
React can be used as a base in the development of single-page 
or mobile applications.

Example 2: what is react

React is a JavaScript library for building user interfaces.

It is maintained by Facebook and a community of individual developers and
companies.

React can be used as a base in the development of single-page or mobile
applications.

Example 3: what is reactjs used for

// React. js is an open-source JavaScript library that is used for building user interfaces specifically for single-page applications. It's used for handling the view layer for web and mobile apps. React also allows us to create reusable UI components