Pro Express. js: Master Express. js: the Node. js Framework for Your Web Development

__Pro Express.js__ is for the reader who wants to quickly get up-to-speed with Express.js, the flexible Node.js framework. Author Azat Mardan clearly explains how to start developing with Express.js with a basic 'Hello World', and then delves into a deep API reference, before looking at common and abstract development problems. Lastly, you will learn how to build a series of real-world apps in order to cement your knowledge.In order to get the best from this book, you will be familiar with Node.js scripts and able to install packages using npm. In the deep API reference, each aspect of the Express.js API is explained clearly with a simple exercise to demonstrate its usage. This includes configuration, settings and environments; different middleware and its uses; templating engines; extracting parameters and routing; request and response; error handling; and running an app. In the next part you'll delve into abstraction, streams, authentication, multithreading, Socket.io, security, and more complex modules. You will also learn about smaller frameworks built using Express.js, such as Sails.js, and Derby. Finally you'll build real-world apps including a REST API, Todo App, and Instagram gallery. Express.js is used by a range of well-known companies such as MySpace and Storify, and it's becoming more and more likely that it'll be a required skill for new developers. With this book you can skip learning via complicated documentation, and get the information from a developer who's been using Express.js for long enough to explain things well. Add __Pro Express.js__ to your library today. Pro Express.js 336 Contents at a Glance 3 Contents 338 About the Author 348 About the Technical Reviewers 349 Foreword 350 Acknowledgments 352 Introduction 5 Part i: Getting Started 8 Chapter 1: Starting with Express.js 9 How Express.js Works 10 Third-Party Dependencies 11 Instantiations 11 Connecting to Databases 11 Configuring Express.js App Settings 12 Defining Middleware 12 Defining Routes 12 Starting the App 12 Express.js Installation 13 Express.js Generator In stallation 18 Summary 20 Chapter 2: Hello World Example 21 Getting Started 21 Using Request Handlers 23 Outputting Terminal Messages 23 Enhancing the App 25 Generator Commands 26 Generating a Skeleton Express.js app 27 Reviewing the Application’s Structure 28 App.js 29 MVC Structure and Modules 34 Watching for File Changes 35 Summary 36 Part II: Deep API Reference 37 Chapter 3: Configuration, Settings, and Environments 38 Configuration 38 app.set( ) and app.get( ) 39 app.enable( ) and app.disable( ) 39 app.enabled( ) and app.disabled( ) 40 Settings 40 env 41 view cache 41 view engine 41 views 43 trust proxy 43 jsonp callback name 43 json replacer and json spaces 45 case sensitive routing 46 strict routing 47 x-powered-by 47 etag 49 query parser 50 subdomain offset 50 Environments 50 Summary 54 Chapter 4: Working with Middleware 55 Applying Middleware 56 Essential Middleware 59 compression 60 morgan 62 body-parser 63 urlencoded() 64 cookie-parser 65 express-session 66 csurf 66 express.static() 68 connect-timeout 68 errorhandler 70 method-override 70 response-time 71 serve-favicon 72 serve-index 73 vhost 75 connect-busboy 76 Other Middleware 77 Summary 77 Chapter 5: Template Engines and Consolidate.js 78 How to Use Template Engines 79 app.engine() 80 Uncommon Libraries 81 Template Engine Choices 85 Jade 85 Haml.js 85 EJS 85 Handlebars.js 85 Hogan.js Adapters 86 Combyne.js 86 Swig 86 Whiskers 86 Blade 86 Haml-Coffee 86 Webfiller 86 Consolidate.js 86 Summary 88 Chapter 6: Parameters and Routing 89 Parameters 89 app.param() 93 Routing 96 app.VERB() 97 app.all() 100 Trailing Slashes 100 Router Class 100 router.route(path) 101 Request Handlers 102 Summary 104 Chapter 7: Express.js Request Object 105 request.query 106 request.params 108 request.body 110 request.route 112 request.cookies 113 request.signedCookies 115 request.header( ) and request.get( ) 115 Other Attributes and Methods 115 Summary 119 Chapter 8: Express.js Response Object 120 response.render( ) 120 response. locals 123 response.set( ) 125 response.status( ) 127 response.send( ) 128 response.json( ) 131 response.jsonp( ) 133 response.redirect( ) 134 Other Response Methods and Properties 134 Streams 138 Summary 140 Chapter 9: Error Handling and Running an App 141 Error Handling 141 Running an App 145 app.locals 145 app.render() 145 app.mountpath 146 app.on(‘mount’, function(parent){...}) 147 app.path() 147 app.listen() 147 Summary 151 Part III: Solving Common and Abstract Problems 152 Chapter 10: Abstraction 153 Middleware 153 Routes 154 Combining Middleware and Routes 156 Summary 158 Chapter 11: Database, Keys and Stream Tips 159 Using Databases in Modules 159 Keys and Passwords 161 JSON File 162 Environment Variables 163 Streams 163 Summary 168 Chapter 12: Redis and Authentication Patterns 169 Redis 169 Authentication Patterns 173 Summary 174 Chapter 13: Multithreading with Clusters 175 A Multithreading Example 175 Summary 178 Chapter 14: Applying Stylus, Less, and Sass 179 Stylus 179 Less 180 Sass 181 Summary 181 Chapter 15: Security Tips 182 Cross-Site Request Forgery 182 Process Permissions 185 HTTP Security Headers 185 Input Validation 187 Summary 189 Chapter 16: Socket.IO and Express.js 190 Using Socket.IO 190 Running the App 194 Summary 195 Chapter 17: Domain and Express. js 196 Defining the Problem 196 Exploring a Basic Domain Example 197 Writing a Domain App 197 Summary 201 Chapter 18: Sails.js, DerbyJS, LoopBack, and Other Frameworks 202 Sails.js 202 DerbyJS 204 LoopBack 207 Other Frameworks 210 Summary 211 Part IV: Tutorials and Examples 212 Chapter 19: Instagram Gallery 213 Starting the Instagram Gallery 213 Viewing the Gallery 217 Summary 218 Chapter 20: Todo App 219 Overview 220 Setup 225 App.js 227 Routes 233 Jade 237 Less 243 Summary 244 Chapter 21: REST API 245 RESTful API Basics 246 Test Coverage 247 Dependencies 252 Server Implementation 253 Summary 257 Chapter 22: HackHall 258 What Is HackHall? 258 Running HackHall 259 Structure 266 Package. json 267 Express.js App 268 Routes 273 index. js 273 auth. js 273 main. js 278 users. js 281 application. js 287 posts. js 290 Mongoose Models 297 Mocha Tests 305 Summary 310 Appendix A: Related Reading and Resources 311 Other Node.js Frameworks 311 Node.js Books 313 JavaScript Classics 314 Courses 314 Appendix B: Migrating Express.js 3.x to 4.x: Middleware, Route, and Other Changes 315 Introducing Unbundled Middleware in Express.js 4 315 Removing Deprecated Methods from Express.js 4 Apps 317 app.configure() 317 app.router 317 res.on(‘header’) 318 res.charset 318 res.headerSent 318 req.accepted() 318 Other Express.js 4 Changes 318 app.use() 318 res.location() 318 app.route() 318 json spaces 319 req.params 319 res.locals 319 req.is 319 Express.js Command-Line Generator 319 Exploring the New Express.js 4 Route Instance and How to Chain It 319 Further Express.js 4 Migration Reading Links 321 Appendix C: Express.js 4 Cheat Sheet 322 Installation 323 Generator 323 Basics 323 HTTP Verbs and Routes 324 Request 324 Request Header Shortcuts 324 Response 325 Handlers Signatures 325 Stylus and Jade 325 Body 325 Static 326 Connect Middleware 326 Other Popular Middleware 326 Appendix D: ExpressWorks 327 Installation 327 Usage 328 Resetting 328 Tasks 328 Hello World 328 Jade 328 Good Old Form 329 Static 329 Stylish CSS 329 Param Pam Pam 329 What’s in a Query 330 JSON Me 330 Summary 330 Index 331 Pro Express.js is for the reader who wants to quickly get up-to-speed with Express.js, the flexible Node.js framework. Author Azat Mardan clearly explains how to start developing with Express.js with a basic 'Hello World', and then delves into a deep API reference, before looking at common and abstract development problems. Lastly, you will learn how to build a series of real-world apps in order to cement your knowledge. In order to get the best from this book, you will be familiar with Node.js scripts and able to install packages using npm. In the deep API reference, each aspect of the Express.js API is explained clearly with a simple exercise to demonstrate its usage. This includes configuration, settings and environments; different middleware and its uses; templating engines; extracting parameters and routing; request and response; error handling; and running an app. In the next part you'll delve into abstraction, streams, authentication, multithreading, Socket.io, security, and more complex modules. You will also learn about smaller frameworks built using Express.js, such as Sails.js, and Derby. Finally you'll build real-world apps including a REST API, Todo App, and Instagram gallery. Express.js is used by a range of well-known companies such as MySpace and Storify, and it's becoming more and more likely that it'll be a required skill for new developers. With this book you can skip learning via complicated documentation, and get the information from a developer who's been using Express.js for long enough to explain things well. Add Pro Express.js to your library today. Azat Mardan. Master Express.js For Your Development. Includes Index.