Node.js是一套用來(lái)編寫(xiě)高性能網(wǎng)絡(luò)服務(wù)器Javas cript工具包。比較獨(dú)特的是，Node.js會(huì)假設(shè)是在POSIX環(huán)境下運(yùn)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(gè)仿POSIX的環(huán)境

是一個(gè)Javas cript運(yùn)行環(huán)境。實(shí)際上它是對(duì)GoogleV8引擎（應(yīng)用于Google Chrome瀏覽器)進(jìn)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.