node.js安装
下载node.js安装包：https://nodejs.org/en/download/，下载相应版本的node.js.
需注意，在window中，node的安装目录中，最好不要有空格或中文字符。
nodeJS的资源仓库在国内使用过程中，偶尔会遇到各种资源问题，通常设置为淘宝的镜像，网上很多说法是安装淘宝镜像

第一种安装方式
    $ npm install -g cnpm --registry=https://registry.npmmirror.com

 
    然后再用到npm install的时候，使用cnpm install进行安装node_modules。 
    但是该种方式，在集成到IED的时候，你如在IDEA中，如果想在IDEA中，直接使用node的命令，进行install，就行不通了。

第二种方式： 
     npm config set registry https://registry.npmmirror.com
     更改npm的config的registry 为淘宝镜像，然后再使用npm的时候，就是从淘宝镜像拉取数据了。

其它资源更改
    在更新node-sass中，有时候也会出现资源下载不了的问题，通常是git上的资源下载不了，这时候，可以更改node-sass的资源路径为淘宝的 
   npm config set sass_binary_site=https://npmmirror.com/mirrors/node-sass/ 

phantomjs的源 
     npm config set phantomjs_cdnurl=https://nnpmmirror.com/mirrors/phantomjs/ 
electron源 
     npm config set electron_mirror=https://npmmirror.com/mirrors/electron/

2.3 查看Nodejs默认配置

1. #npm config ls -l
2. cli configs
3.long = true
4. user-agent = "npm/2.14.12 node/v4.2.4 win32 x64"
5. builtin config undefined
6. prefix = "C:\\Users\\zgr\\AppData\\Roaming\\npm"
7. registry = "https://registry.npm.taobao.org/"
8. default values
9. access = null
10. always-auth = false

11. bin-links = true
12. browser = null
13. ca = null
14. cache = "C:\\Users\\zgr\\AppData\\Roaming\\npm-cache"
15. cache-lock-retries = 10
16. cache-lock-stale = 60000
17. cache-lock-wait = 10000
18. cache-max = null
19. cache-min = 10
20. cafile = undefined

21. cert = null
22. color = true
23. depth = null
24. description = true
25. dev = false
26. editor = "notepad.exe"
27. engine-strict = false
28. fetch-retries = 2
29. fetch-retry-factor = 10
30. fetch-retry-maxtimeout = 6000031. fetch-retry-mintimeout = 10000
32. force = false
33. git = "git"
34. git-tag-version = true
35. global = false
36. globalconfig = "C:\\Users\\zgr\\AppData\\Roaming\\npm\\etc\\npmrc"
37. globalignorefile = "C:\\Users\\zgr\\AppData\\Roaming\\npm\\etc\\npmignore"
38. group = 0
39. heading = "npm"
40. https-proxy = null

41. if-present = false
42. ignore-scripts = false
43. init-author-email = ""
44. init-author-name = ""
45. init-author-url = ""
46. init-license = "ISC"
47. init-module = "C:\\Users\\zgr\\.npm-init.js"
48. init-version = "1.0.0"
49. json = false
50. key = null

51. link = false
52. local-address = undefined
53. loglevel = "warn"
54. long = false (overridden)
55. message = "%s"
56. node-version = "4.2.4"
57. npat = false
58. onload-script = null
59. optional = true
60. parseable = false

61. prefix = "C:\\Program Files\\nodejs" (overridden)
62. production = false
63. proprietary-attribs = true
64. proxy = null
65. rebuild-bundle = true
66. registry = "https://registry.npmjs.org/" (overridden)
67. rollback = true
68. save = false
69. save-bundle = false
70. save-dev = false

71. save-exact = false
72. save-optional = false
73. save-prefix = "^"
74. scope = ""
75. searchexclude = null
76. searchopts = ""
77. searchsort = "name"
78. shell = "C:\\Windows\\system32\\cmd.exe"
79. shrinkwrap = true
80. sign-git-tag = false

81. spin = true
82. strict-ssl = true
83. tag = "latest"
84. tag-version-prefix = "v"
85. tmp = "C:\\Users\\zgr\\AppData\\Local\\Temp"
86. umask = 0
87. unicode = true
88. unsafe-perm = true
89. usage = false
90. user = 0

91. user-agent = "npm/{npm-version} node/{node-version} {platform} {arch}" (overridden)
92. userconfig = "C:\\Users\\zgr\\.npmrc"
93. version = false
94. versions = false
95. viewer = "browser"

2.4 设置全局安装目录
    npm config set cache "D:\nodejs\node_cache"
    npm config set prefix "D:\nodejs\node_global"

然后就可以愉快的使用cnpm安装工具了

3 常用命令集合
1. node -v #查看安装版本
2. npm -v #查看npm安装版本
3. npm config ls -l #查看配置项