#React

React (also known as React.js or ReactJS) is a front-end JavaScript library that aims to make building user interfaces based on components more seamless. React can be used to develop single-page, mobile, or server-rendered applications with frameworks like Next.js and Remix. Because React is only concerned with the user interface and rendering components to the DOM, React applications often rely on libraries for routing and other client-side functionality.

A key advantage of React is that it only re-renders those parts of the page that have changed, avoiding unnecessary re-rendering of unchanged DOM elements.

React is free and open-source software under the terms of the MIT License. It is maintained by Meta (formerly Facebook) and a community of individual developers and companies.