React Js is a library of javascript which is developed by Facebook. React js is User interface library. React js is a tool for building User Interface components It is specially used for develop single page applications. It’s used for handling frontend for web and mobile applications. React Js also allows us to create reusable User Interface components. React Js was first time created by Jordan Walke, who is software engineer at Facebook. React Js first time used in deploying on Facebook’s newsfeed in 2011 and on Instagram.com in 2012. React Js allows developers to create large single page web applications which can change data, without reloading the page. The main purpose of React Js is to be fast, scalable, and simple. It works only on frontend handling in application. What are the ReactJS Features? JSX stands for JavaScript XML. With React, it’s an extension for XML-like code for elements and components. ...