Node.js是一套用來編寫高性能網絡服務器Javas cript工具包。比較獨特的是，Node.js會假設是在POSIX環境下運行它Linux或Mac OS X。如果是在Windows下，那就需要安裝MinGW以獲得一個仿POSIX的環境

是一個Javas cript運行環境。實際上它是對GoogleV8引擎（應用于Google Chrome瀏覽器)進行了封裝。

Node.js? is a platform built on Chrome`s Javas cript runtime for easily building fast, 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.