React

React is very popular web application framework. here is the list of main features of React.

1. developed by Facebook and released in 2013
2. Virtual DOM - Only components that change are updated in actual DOM
3. Front end framework to build user interfaces
4. Components - Building block of react app. render method will tell which component to render and where in the DOM. Components can be of 2 types - functional and class based
5. Class based components are stateful components
6. Hooks - methods that are executed during component's lifetime. e.g. render()
7. JSX - use of JSX to insert XML into the JavaScript code