Node.js is a cross-platform runtime environment and library for running JavaScript applications outside the browser. It is used for creating server-side and networking web applications. It is open source and free to use. It can be downloaded from this link https://nodejs.org/en/
Many of the basic modules of Node.js are written in JavaScript. Node.js is mostly used to run real-time server applications.
The definition given by its official documentation is as follows:
Node.js is a platform built on Chrome's JavaScript runtime for easily building fast and scalable network applications. Node.js uses an event-driven, non-blocking I/O model that makes it lightweight and efficient, perfect for data-intensive real-time applications that run across distributed devices.?
Node.js also provides a rich library of various JavaScript modules to simplify the development of web applications.
Different parts of Node.js
The following diagram specifies some important parts of Node.js:
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