NodeJS is an open source, server-side script. JavaScript has many engines and spider monkey is the first JavaScript engine. It was developed by Netscape. Then so many engines were built. Internet explorer’s engine is chakra. After some years chrome has developed a V8 engine which runs on the top of Google’s open-source scripting engine V8. It’s very fast, lightweight and efficient. NodeJS uses the asynchronous mode of operation, event-driven Input/output rather than using the threads for each process and it is a cross-platform JavaScript run-time environment that executes JavaScript code to run on the server. Why NodeJS? NodeJS uses JavaScript for creating server side applications or we can also use any other languages that can be compiled to JavaScript (like typescript). The JavaScript is written in the same way as we are using in any client-side application. But to develop applications with Node, we need to set up the node development environment.   Read More On What Is NodeJS and It’s Benefits for Business read more