React JS

React is a JavaScript library to build user interfaces. React makes it painless to create interactive UIs. Design simple views for each state in your application, and React will efficiently update and render just the right components when your data changes. Declarative views make your code more predictable and easier to debug.

React is a JavaScript library created by Facebook. React is a User Interface (UI) library. React is a tool for building UI components. A react application is made of multiple components, each responsible for rendering a small, reusable piece of HTML.

Components can be nested within other components to allow complex applications to be built out of simple building blocks. A component may also maintain internal state – for example, a TabList component may store a variable corresponding to the currently open tab.