Node.js Cross-platform JavaScript Runtime Environment

Node.js, abbreviated as Node, is an open-source and cross-platform JavaScript runtime environment. It allows JavaScript code to run outside of browsers. 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 Windows, Linux, Unix, Mac OS X, and other operating systems. Node.js features an event-driven and non-blocking I/O model, making it ideal for handling large-scale concurrent connections, which excels in real-time applications such as online games, chat applications, and real-time communication services. Additionally, Node.js uses a modular architecture and npm (Node package manager) for code sharing and reuse among community members, greatly promoting the development and expansion of the Node.js ecosystem. Node.js is not only used for server-side development but also for building toolchains, desktop applications, IoT devices, etc. It handles file systems, database operations, network requests, etc., enabling developers to write full-stack applications in JavaScript, significantly improving development efficiency and convenience. Many large enterprises and organizations, such as Netflix, PayPal, and Walmart, have adopted Node.js for their web applications, enhancing application performance, simplifying development processes, and responding faster to market demands.