nodejs使用范围

-直接在cmd命令行运行，在你的电脑上直接运行

-可以搭建一个web服务器(express,koa)

-一些基本的使用

-modules是如何工作的

-npm管理modules

-搭建一个web服务器。

wow,that is awesome

首先当然是下载nodejs的安装包，这里就不再演示了。nodejs官方

modules是如何工作的

建立两个js，moduler01.js moduler02.js

//moduler01js

var _= require('underscore');

var m = require('./modular02.js');

m();

console.log(_);

nodejs

{ [Function]

  _: [Circular],

  VERSION: '1.8.3',

  iteratee: [Function],

  forEach: [Function],

  each: [Function],

  collect: [Function],

  map: [Function],

  inject: [Function],

  foldl: [Function],

  reduce: [Function],

  foldr: [Function],

  reduceRight: [Function],

  detect: [Function],

  find: [Function],

  select: [Function],

  filter: [Function],

  reject: [Function],

  all: [Function],

  every: [Function],

  any: [Function],

  some: [Function],

  include: [Function],

  includes: [Function],

  contains: [Function],

  invoke: [Function],

  pluck: [Function],

  where: [Function],

  findWhere: [Function],

  max: [Function],

  min: [Function],

  shuffle: [Function],

  sample: [Function],

  sortBy: [Function],

  groupBy: [Function],

  indexBy: [Function],

  countBy: [Function],

  toArray: [Function],

  size: [Function],

  partition: [Function],

  take: [Function],

  head: [Function],

  first: [Function],

  initial: [Function],

  last: [Function],

  drop: [Function],

  tail: [Function],

  rest: [Function],

  compact: [Function],

  flatten: [Function],

  without: [Function],

  unique: [Function],

  uniq: [Function],

  union: [Function],

  intersection: [Function],

  difference: [Function],

  zip: [Function],

  unzip: [Function],

  object: [Function],

  findIndex: [Function],

  findLastIndex: [Function],

  sortedIndex: [Function],

  indexOf: [Function],

  lastIndexOf: [Function],

  range: [Function],

  bind: [Function],

  partial: [Function],

  bindAll: [Function],

  memoize: [Function],

  delay: [Function],

  defer: [Function],

  throttle: [Function],

  debounce: [Function],

  wrap: [Function],

  negate: [Function],

  compose: [Function],

  after: [Function],

  before: [Function],

  once: [Function],

  keys: [Function],

  allKeys: [Function],

  values: [Function],

  mapObject: [Function],

  pairs: [Function],

  invert: [Function],

  methods: [Function],

  functions: [Function],

  extend: [Function],

  assign: [Function],

  extendOwn: [Function],

  findKey: [Function],

  pick: [Function],

  omit: [Function],

  defaults: [Function],

  create: [Function],

  clone: [Function],

  tap: [Function],

  isMatch: [Function],

  isEqual: [Function],

  isEmpty: [Function],

  isElement: [Function],

  isArray: [Function: isArray],

  isObject: [Function],

  isArguments: [Function],

  isFunction: [Function],

  isString: [Function],

  isNumber: [Function],

  isDate: [Function],

  isRegExp: [Function],

  isError: [Function],

  isFinite: [Function],

  isNaN: [Function],

  isBoolean: [Function],

  isNull: [Function],

  isUndefined: [Function],

  has: [Function],

  noConflict: [Function],

  identity: [Function],

  constant: [Function],

  noop: [Function],

  property: [Function],

  propertyOf: [Function],

  matches: [Function],

  matcher: [Function],

  times: [Function],

  random: [Function],

  now: [Function: now],

  escape: [Function],

  unescape: [Function],

  result: [Function],

  uniqueId: [Function],

  templateSettings:

   { evaluate: /<%([\s\S]+?)%>/g,

     interpolate: /<%=([\s\S]+?)%>/g,

     escape: /<%-([\s\S]+?)%>/g },

  template: [Function],

  chain: [Function],

  mixin: [Function] }

//moduler02.js

module.exports = function(){

	console.log('nodejs');

}

npm管理modules

npm init //初始化npm管理，生产package.json

{

  "name": "xh",

  "version": "1.0.0",

  "description": "",

  "main": "modular01.js",

  "scripts": {

    "test": "echo \"Error: no test specified\" && exit 1"

  },

  "author": "",

  "license": "ISC",

  "dependencies": {

    "backbone": "^1.3.3",

    "underscore": "^1.8.3"

  }

npm install //如果有package.json 会自动下载dependencies 里面的插件

npm install backbone -S //加上-S,会保存到package.json里面

搭建一个web服务器。

建立一个http.js

var http = require('http');

var server = http.createServer(function(require,response){

	console.log('got a require');

	response.write('hi');

	response.end();

});

server.listen(3000);

//cmd上面输入

node http.js

然后在浏览器里面输入 localhost:3000,就能看到hi