PART Ⅰ　从安装与概念开始

CHAPTER 1　安装............................................... 3

在Windows下安装............................................... 3

在OS.X下安装. ................................................ 4

在Linux下安装................................................. 5

编译. ............................................................5

确保安装成功. ...............................................5

Node.REPL................................................. 5

执行文件.......................................................... 6

NPM................................................................. 6

安装模块...........................................................7

自定义模块. .......................................................8

安装二进制工具包. ..................................................9

浏览NPM仓库. .......................................................9

小结................................................................. 10

CHAPTER 2　javaScript概览.........................................11

介绍.......................................................... 11

Javascript基础..................................................... 12

类型. ......................................................... 12

类型的困惑. ............................................... 12

函数. .......................................................... 13

THIS、FUNCTION #CALL以及FUNCTION#APPLY.................... 14

函数的参数数量. ........................... 14

闭包. ........................................................ 14

类. .............................................................. 15

继承. ..................................................... 16

TRY.{}.CATCH.{}...................................... 17

v8中的JavaScript............................... 17

OBJECT#KEYS....................................................... 18

ARRAY#ISARRAY................................................ 18

数组方法................................................. 18

字符串方法.. .................................................... 19

JSON............................................................. 19

FUNCTION#BIND....................................................... 19

FUNCTION#NAME.............................................. 19

_PROTO_（继承）. ............................................ 20

存取器....................................................... 20

小结.............................................................. 21

CHAPTER ３　阻塞与非阻塞IO................................. 23

能力越强，责任就越大................................................. 23

阻塞. ............................................................. 25

单线程的世界. ............................................... 27

错误处理..................................................... 29

堆栈追踪................................................ 30

小结............................................................... 32

CHAPTER 4　Node中的JavaScript ..................................... 33

global对象....................................................... 33

实用的全局对象. ................................................ 34

模块系统............................................................ 34

绝对和相对模块. .................................................. 35

暴露API. ............................................................... 37

事件......................................................... 38

buffer............................................................... 40

小结................................................................... 41

PART Ⅱ　Node重要的API

CHAPTER 5　命令行工具（CLI）以及FS API：首个Node应用................... 45

需求................................................. 45

编写首个Node程序...................................... 46

创建模块.............................................. 46

同步还是异步. ............................ 47

理解什么是流（stream）................................... 49

输入和输出. .......................................................... 50

重构. ........................................ 53

用fs进行文件操作. .............................. 55

对CLI一探究竟. ................................................. 56

argv.................................................... 57

工作目录...................................... 57

环境变量........................................... 58

退出. ............................................... 58

信号. .......................................................... 58

ANSI转义码............................................ 59

对fs一探究竟. ................................................. 59

Stream......................................................... 59

监视. .......................................... 60

小结...................................................... 61

CHAPTER 6　TCP ........................................... 63

TCP有哪些特性. ..................................................... 64

面向连接的通信和保证顺序的传递. ........................... 64

面向字节........................................ 65

可靠性............................................... 65

流控制......................................... 65

拥堵控制.............................................. 65

Telnet................................................................ 65

基于TCP的聊天程序............................................... 68

创建模块..................................... 68

理解NET.SERVER.API........................ 68

接收连接....................................... 70

data事件. ...................................................... 71

状态以及记录连接情况. ........................................ 73

圆满完成此程序. ............................................ 75

一个IRC客户端程序.......................................... 77

创建模块.............................................. 77

理解NET#STREAM.API.. ......................................... 78

实现部分IRC协议. .................................................. 78

测试实际的IRC服务器. .................................. 78

小结................................................................. 79

CHAPTER 7　HTTP .................................................. 81

HTTP结构......................................................... 81

头信息. ...................................................... 82

连接.............................................................. 87

一个简单的Web服务器.................................................. 88

创建模块....................................... 88

输出表单.................................................... 88

method和URL. ........................................... 90

数据. .............................................. 92

整合. ................................................ 94

让程序更健壮. ..................................... 95

一个Twitter.Web客户端......................................... 96

创建模块....................................... 96

发送一个简单的HTTP请求. ...................... 97

发送数据......................................... 98

获取推文................................................. 99

superagent来拯救.............................................. 102

使用up重启HTTP服务器..................................... 103

小结............................................. 104

PART Ⅲ　Web开发

CHAPTER 8　Connect .............................. 107

使用HTTP构建一个简单的网站. ....................................... 108

通过Connect实现一个简单的网站...................................... 111

中间件. ................................................. 112

书写可重用的中间件. .........................114

static中间件. .............................................119

query中间件. .......................................120

logger中间件................................................... 120

body.parser中间件. .................................122

cookie.........................................................125

会话（session）. ......................................126

Redis.session..................................................131

methodOverride中间件. ...........................132

basicAuth中间件. ......................................132

小结.............................................................. 134

CHAPTER 9　Express..................................................135

一个小型Express应用. ...................................... 135

创建模块..............................................136

HTML...........................................................136

SETUP..........................................................137

定义路由............................................137

查询. .................................................140

运行. .....................................................141

设置......................................................... 142

模板引擎...................................................... 143

错误处理........................................................ 144

快捷方法................................................. 144

路由................................................ 146

中间件. .................................................... 148

代码组织策略. ......................................... 149

小结................................................. 151

CHAPTER 10　WebSocket .................. 153

ajax.............................................. 153

HTML5.WebSocket............................................... 156

一个ECHO示例. ......................................................... 157

初始化项目. .............................................157

建立服务器. ..................................................158

建立客户端. ......................................159

运行示例程序. ...................................160

鼠标光标.......................................... 161

初始化示例程序. .........................................161

建立服务器. ............................................161

建立客户端. .....................................164

运行示例程序. .........................................166

面临一个挑战. ............................................. 166

关闭并不意味着断开连接. .............................166

JSON...........................................167

重连. ...................................................167

广播. ................................................167

WebSocket属于HTML5：早期浏览器不支持. ..........................167

解决方案.................................................167

小结............................................................. 167

CHAPTER 11　Socket.IO.............................................169

传输................................................. 170

断开.VS.关闭. ............................................170

事件. ..........................................170

命名空间..............................................171

聊天程序................................................. 172

初始化程序. .......................................172

构建服务器. ..........................................172

构建客户端. .......................................173

事件和广播. ........................................175

消息接收确认. .................................179

一个轮流做DJ的应用................................ 180

扩展聊天应用. ...........................................181

集成Grooveshark.API. ...............................182

播放歌曲...............................................185

小结.................................................... 190

PART Ⅳ　数据库

CHAPTER 12　MongoDB.......................193

安装.................................................. 195

使用MongoDB：一个用户认证的例子. .................................. 195

构建应用程序. .......................................195

创建Express.App.. ..............................196

连接MongoDB. ...................................200

创建文档......................................201

查找文档..................................203

身份验证中间件. ..................................204

校验.. ..............................................205

原子性..............................................206

安全模式................................206

Mongoose介绍......................................... 206

定义模型........................................207

定义嵌套的键. ..........................208

定义嵌套文档. .....................................209

构建索引..........................................209

中间件.................................................209

探测模型状态.. ...............................210

查询. ..............................................210

扩展查询........................................210

排序.. ........................................211

选择. ......................................................211

限制.. .....................................211

跳过. .........................................211

自动产生键. ...............................211

转换. ..............................................212

一个使用Mongoose的例子........................................ 212

构建应用.................................212

重构. ..............................213

建立模型.................................213

小结.......................................... 215

CHAPTER 13　MySQL...........................................217

node-mysql........................................ 217

初始化项目. .......................................217

Express应用. ...................................218

连接MySQL. .....................................219

初始化脚本. .......................................220

创建数据................................................224

获取数据.....................................228

sequelize............................................ 229

初始化sequelize. ................................230

初始化Express应用. ....................................230

连接sequelize. .........................233

定义模型和同步. ........................... 234

创建数据.................................236

获取数据......................................238

删除数据..............................239

完整地完成应用. ...............................240

小结.......................................... 241

CHAPTER 14　Redis......................................... 243

安装Redis............................................... 244

Redis查询语言. ............................................... 245

数据类型............................................. 245

字符串. ...................................246

哈希. .................................................246

列表. ......................................... 248

数据集. .....................................249

有序数据集. .........................................249

Redis和Node. .......................................... 249

使用node-redis实现一个社交图谱. .............250

小结......................................... 259

PART Ⅴ　测试

CHAPTER 15　代码共享 ................................. 263

什么样的代码可以共享........................................... 263

书写兼容的JavaScript代码................................ 264

导出模块......................................................264

模拟实现ECMA.API. ................................265

模拟实现Node.API. ......................................267

模拟实现浏览器端API. ...............................267

跨浏览器的继承实现. ...........................268

集成到一起：browserbuild. ...................... 268

基础案例....................................269

小结......................................... 271

CHAPTER 16　测试................................... 273

简单测试........................................ 273

测试目标............................................. 274

测试策略................................... 274

测试程序...................................................275

expect.js................................................. 276

API一览. .........................................276

Mocha................................................. 278

测试异步代码. ..................................279

BDD风格. ................................281

TDD风格. .......................................281

export风格. .................................282

在浏览器端使用Mocha. ...................................282

小结.................................... 284

索引 ...................................... 285

绝大部分 Web应用都包含客户端和服务器端两部分。服务器端的实现往往比较复杂、麻烦。创建一个简单的服务器都要求对多线程、伸缩性以及服务器部署有专业的技术知识。除此之外，由于客户端软件是用 HTML和JavaScript来实现的，而服务器端核心代码通常都是用静态编程语言实现的，所以，开发 Web应用经常会有错乱的感觉。由于这种前后端开发语言的差异，不得不让开发者使用多种编程语言，同时还要对特定的程序逻辑事先做好设计选型。

几年前，要用 JavaScript来实现服务端软件几乎是想都不敢想的一件事情。糟糕的性能、不成熟的内存管理以及缺乏操作系统层面的集成，不解决这些问题， JavaScript很难成为一门服务器端的语言。作为 Google Chrome浏览器的一部分，新的 V8引擎能够解决前两个问题。 V8是一个开源的项目，通过简单的 API就可以将其集成进去。

Ryan Dahl洞察到了这样一个机会，可以通过将 V8内嵌到操作系统的集成层，来让 JavaScript享受到底层操作系统的异步接口，从而实现将其带到服务器端的目的。这就是 Node.js的设计思路。这么做的好处是显而易见的。程序员们可以在客户端和服务器端使用同样的编程语言了。 JavaScript动态语言的特性使得开发和试验服务器端代码变得很自由，使得程序员们摆脱了传统那种又慢又重的编程模式。

Node.js迅速蹿红，衍生了一个强大的开源社区、支持企业，甚至还拥有属于自己的技术大会。我把这种成功归结于它的简洁，高效，同时提高了编程生产力。我很高兴 V8成为其一小部分。

本书将带着读者学习如何基于 Node.js为Web应用构建服务器端部分，同时还会带着大家学习如何组织服务器端异步代码以及如何与数据库进行交互。

好好享受这本书带来的乐趣吧！