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[Ebook] Tập làm quen với Nodejs hiệu quả


Table of Contents
About the Tutorial i Audience ... i Prerequisites . i Execute Node.js Online . i Copyright & Disclaimer . i Table of Contents ii
1. Introduction .. 1 What is Node.js? .. 1 Features of Node.js . 1 Who Uses Node.js? .. 2 Concepts .. 2 Where to Use Node.js? 2 Where Not to Use Node.js? . 2
2. Environment Setup ... 3 Try it Option Online . 3 Local Environment Setup . 3 Text Editor ... 3 The Node.js Runtime ... 3 Download Node.js Archive .. 4 Installation on UNIX/Linux/Mac OS X and SunOS 4 Installation on Windows .. 4 Verify Installation: Executing a File .. 5
3. First Application 6 Creating Node.js Application ... 6
4. REPL Terminal ... 9 Online REPL Terminal .. 9 REPL Commands 11 Stopping REPL 11
5. NPM 12 Installing Modules using NPM ... 12 Global vs Local Installation 12 Using package.json 14 Attributes of Package.json . 19 Uninstalling a Module ... 19 Updating a Module 19 Search a Module 19 Create a Module 19
6. Callback Concept . 21 What is Callback? ... 21 Blocking Code Example .. 21 Non-Blocking Code Example .. 22

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7. Event Loop .. 23 Event-Driven Programming ... 23 Example . 24 How Node Applications Work? . 25
8. Event Emitter .. 26 EventEmitter Class . 26 Methods 26 Class Methods ... 27 Events 28 Example . 28
9. Buffers 30 Creating Buffers . 30 Writing to Buffers .. 30 Reading from Buffers . 31 Convert Buffer to JSON .. 32 Concatenate Buffers .. 33 Compare Buffers 33 Copy Buffer 34 Slice Buffer . 35 Buffer Length . 36 Methods Reference ... 36 Class Methods ... 41
10. Streams ... 43 What are Streams? 43 Reading from a Stream .. 43 Writing to a Stream ... 44 Piping the Streams . 45 Chaining the Streams . 46
11. File System .. 48 Synchronous vs Asynchronous .. 48 Open a File . 49 Get File Information .. 51 Writing a File . 53 Reading a File . 54 Closing a File .. 56 Truncate a File ... 57 Delete a File ... 59 Create a Directory . 60 Read a Directory 61 Remove a Directory ... 62 Methods Reference ... 63
12. Global Objects 69 __filename . 69 __dirname . 69 setTimeout(cb, ms) 70 clearTimeout (t) . 70 setInterval(cb, ms) . 71 Global Objects ... 71
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Console Object .. 72 Process Object ... 74
13. Utility Modules ... 81 OS Module . 81 Path Module .. 83 Net Module 85 DNS Module ... 92 Domain Module . 95
14. Web Module ... 99 What is a Web Server? .. 99 Web Application Architecture ... 99 Creating a Web Server using Node .. 100 Make a request to Node.js server ... 102 Creating a Web client using Node ... 102
15. Express Framework ... 104 Express Overview 104 Installing Express . 104 Hello world Example 104 Request & Response 106 Request Object 106 Response Object .. 109 Basic Routing ... 115 Serving Static Files ... 118 GET Method . 119 POST Method ... 121 File Upload ... 123 Cookies Management .. 125
16. RESTful API ... 126 What is REST Architecture? . 126 HTTP methods . 126 RESTful Web Services .. 126 Creating RESTful for a Library .. 126 List Users . 128 Add Users 129 Show Detail .. 130 Delete a User ... 131
17. Scaling an Application ... 133 The exec() method ... 133 The spawn() Method ... 135 The fork() Method ... 137
18. Packaging .. 139 JXcore Installation ... 139 Packaging the Code . 140 Launching JX File .. 140
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