
JSX is a XML-like syntax extension to ECMAScript (the acronym stands for JavaScript XML).
Uses reusable/composable UI components to develop the view. Follows Unidirectional data flow or data binding. It uses VirtualDOM instead of RealDOM considering that RealDOM manipulations are expensive. React was first deployed on Facebook’s News Feed in 2011 and on Instagram in 2012. React was created by Jordan Walke, a software engineer working for Facebook. It is used for handling view layer for web and mobile apps. React is an open-source frontend JavaScript library which is used for building user interfaces especially for single page applications.
React Interview Questions & Answers Core React