Node.js 是什么#http://nodejs.cn/基于事件驱动，非阻塞I/O，工具箱#nodemon#https://github.com/remy/nodemonnodemon is a tool that helps develop node.js based applications by automatically restarting the node application when file changes in the directory are detected.监控文件热加载。标准库#文档 http://nodejs.cn/api/http#net#