Ch 1 - 1 NodeJS的安装与使用

1. 安装NodeJS

到官网下载安装

2. 使用Node命令

安装完成后，查看NodeJS的版本：

node -v

npm -v

3. 安装nrm

nrm是一个管理 npm 源的工具，用来切换官方 npm 源和国内的 npm 源（如:cnpm），当然也可以用来切换官方 npm 源和公司私有 npm 源

全局安装nrm

npm i nrm -g

查看当前nrm内置的几个npm源地址：

C:\Users\zhangyanming > nrm ls

npm ---- https://registry.npmjs.org/

cnpm --- http://r.cnpmjs.org/

* taobao - https://registry.npm.taobao.org/

nj ----- https://registry.nodejitsu.com/

rednpm - http://registry.mirror.cqupt.edu.cn/

npmMirror  https://skimdb.npmjs.com/registry/

edunpm - http://registry.enpmjs.org/

切换到cnpm

C:\Users\zhangyanming > nrm use cnpm

verb config Skipping project config: C:\Users\zhangyanming/.npmrc. (matches userconfig)

Registry has been set to: http://r.cnpmjs.org/

C:\Users\zhangyanming > nrm ls

npm ---- https://registry.npmjs.org/

* cnpm --- http://r.cnpmjs.org/

taobao - https://registry.npm.taobao.org/

nj ----- https://registry.nodejitsu.com/

rednpm - http://registry.mirror.cqupt.edu.cn/

npmMirror  https://skimdb.npmjs.com/registry/

edunpm - http://registry.enpmjs.org/