windows下安装node.js环境

C:\Users\wt>node
> npm install express
npm should be run outside of the node repl, in your normal shell.
(Press Control-D to exit.)
>
C:\Users\wt>npm install express
Error: ENOENT, stat 'C:\Users\wt\AppData\Roaming\npm'
//出现这个错误后在C:\Users\wt\AppData\Roaming\下面建立npm文件夹就好了

C:\Users\wt>npm install express
express@4.9.5 node_modules\express
├── escape-html@1.0.1
├── fresh@0.2.4
├── cookie-signature@1.0.5
├── utils-merge@1.0.0
├── cookie@0.1.2
├── merge-descriptors@0.0.2
├── finalhandler@0.2.0
├── range-parser@1.0.2
├── parseurl@1.3.0
├── serve-static@1.6.3
├── media-typer@0.3.0
├── methods@1.1.0
├── vary@1.0.0
├── path-to-regexp@0.1.3
├── depd@0.4.5
├── qs@2.2.4
├── proxy-addr@1.0.3 (forwarded@0.1.0, ipaddr.js@0.1.3)
├── debug@2.0.0 (ms@0.6.2)
├── send@0.9.3 (destroy@1.0.3, ms@0.6.2, mime@1.2.11)
├── on-finished@2.1.0 (ee-first@1.0.5)
├── etag@1.4.0 (crc@3.0.0)
├── accepts@1.1.1 (negotiator@0.4.8, mime-types@2.0.2)
└── type-is@1.5.2 (mime-types@2.0.2)

C:\Users\wt>