React

React is a philosophy and framework for building interactive web (and native) applications that are built on reusable components.

Web developers use React to build dynamic web applications like Twitter. React’s philosophy emphasizes reusable components so you don’t rewrite code: every button, input, card, you name it should basically be reusable. The must-know basics and pieces of the React ecosystem: props, JSX, state, and React Native vs. React JS.