Node.js Runtime Environment for JavaScript Applications

Node.js, also known as Node, is an open-source, cross-platform JavaScript runtime environment that allows running JavaScript code outside of a browser. Founded by Ryan Dahl in 2009, Node.js aims to create high-performance web servers and network applications. It is based on Google Chrome's V8 JavaScript engine and runs on operating systems like Windows, Linux, Unix, and Mac OS X. Node.js features event-driven and non-blocking I/O model, making it ideal for handling large-scale concurrent connections, thereby excelling in real-time applications such as online games, chat apps, and real-time communication services. Additionally, Node.js utilizes a modular architecture and npm (Node Package Manager) for code sharing and reuse, significantly promoting the growth and expansion of its ecosystem. Besides server-side development, Node.js is used in toolchains, desktop applications, IoT devices, and more. It can handle file systems, operate databases, process network requests, enabling developers to write full-stack applications in JavaScript, enhancing development efficiency and convenience. Many large enterprises and organizations, like Netflix, PayPal, and Walmart, use Node.js for web application development to improve performance, simplify development processes, and respond faster to market demands.