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HTML5 Guidelines for Web Developers

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HTML5 Guidelines for Web Developers


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  • Copyright 2011
  • Edition: 1st
  • Book
  • ISBN-10: 0-321-77274-1
  • ISBN-13: 978-0-321-77274-9

In HTML5 Guidelines for Web Developers, two pioneering web developers provide a comprehensive guide to HTML5’s powerful new elements and techniques through compact, practical, easy-to-understand examples. You’ll discover just how much you can do with HTML5—from programming audio/video playback to integrating geographical data into pages and applications.

This concise, friendly reference is packed with tips, tricks, and samples for making the most of HTML5 with JavaScript and the DOM. The authors present “pure HTML5” examples that are supported by browsers right now, and they share realistic insights into the challenges of leading-edge HTML5 development. All examples are available for download, with links to web resources for new information and specification updates. Topics covered include 

  • Browser support: What you can (and can’t) do with HTML5 today
  • HTML5 document structure and semantics
  • Intelligent forms, including new input types, elements, and client-side validation
  • The “video” and “audio” elements, and scripting media solutions
  • Advanced graphics with Canvas and SVG
  • Geolocation in the browser, including location tracking  via Google Maps
  • Web storage, offline web applications, WebSockets,and Web Workers
  • Embedding sematic markup with Microdata and the Microdata DOM API
  • Implementing drag-and-drop with the “draggable” attribute
  • New global attributes: “data-*,” “hidden,” “contenteditable,” “spellcheck,” and more

If you’re a web developer or designer with at least basic knowledge of HTML, JavaScript, and CSS, this book is all you need to masterHTML5—and get to the cutting edge of web development.

Sample Content

Online Sample Chapter

HTML5 Guidelines for Web Developers: Structure and Semantics for Documents

Table of Contents

Preface xi

About the Authors xiii


Chapter 1: Overview of the New Web Standard 1

1.1 How It All Started 1

1.2 Time Travel through Historic Events 7

1.3 In Medias Res 9

1.4 Can I Start Using HTML5 Now? 16

Summary 18

Chapter 2: Structure and Semantics for Documents 19

2.1 Header with “header” and “hgroup” 21

2.2 Content with “article” 22

2.3 Footer with “footer” and “nav” 24

2.4 Sidebar with “aside” and “section” 25

2.5 The Outline Algorithm 27

2.6 Figures with “figure” and “figcaption” 28

2.7 Text-Level Semantics—More New Tags 29

Summary 35

Chapter 3: Intelligent Forms 37

3.1 New Input Types 38

3.2 Useful Attributes for Forms 43

3.3 New Elements 47

3.4 Client-Side Form Validation 57

3.5 Example: A Support Form 64

Summary 68

Chapter 4: Video and Audio 69

4.1 A First Example 70

4.2 The “video” Element and Its Attributes 71

4.3 Video Codecs 73

4.4 Tools for Video Conversion 76

4.5 Which Format for Which Browser? 82

4.6 Interim Solutions for Older Browsers 83

4.7 Video and Scripting—A Simple Video Player 86

4.8 And What About Audio? 99

Summary 105

Chapter 5: Canvas 107

5.1 A First Example 108

5.2 Rectangles 111

5.3 Colors and Shadows 113

5.4 Gradients 114

5.5 Paths 117

5.6 Text 130

5.7 Embedding Images 135

5.8 Pixel Manipulation 141

5.9 Compositing 149

5.10 Patterns 152

5.11 Transformations 156

5.12 Base64 Encoding with “canvas.toDataURL()”163

5.13 “save()” and “restore()”165

5.14 Animations 166

5.15 Anything Still Missing? 173

Summary 177

Chapter 6: SVG and MathML 179

6.1 MathML 180

6.2 SVG 182

Summary 183

Chapter 7: Geolocation 185

7.1 Introduction to Geolocation 186

7.2 A First Experiment: Geolocation in the Browser 190

7.3 Technical Background of Determining Position 193

7.4 Display of Current Position on OpenStreetMap 194

7.5 Location Tracking with Google Maps 196

7.6 Example: Geonotes 197

7.7 Browser Support 202

Summary 203

Chapter 8: Web Storage and Offline Web Applications 205

8.1 Storage 206

8.2 Offline Web Applications 212

8.3 Browser Support 220

8.4 Example: Click to tick! 220

Summary 230

Chapter 9: WebSockets 231

9.1 The WebSocket Server 233

9.2 Example: A Broadcast Server 234

9.3 Example: Battleships 239

Summary 248

Chapter 10: Web Workers 249

10.1 Introduction to Web Workers 249

10.2 Search for Leap Years 251

10.3 Calculate Altitude Profiles with Canvas 253

Summary 259

Chapter 11: Microdata 261

11.1 The Syntax of Microdata 263

11.2 The Microdata DOM API 269

Summary 271

Chapter 12: Finishing Touches: Some Global Attributes 273

12.1 News for the “class” Attribute 274

12.2 Defining Custom Attributes with “data-*” 275

12.3 The “hidden” Attribute 276

12.4 The “classList” Interface 276

12.5 Drag and Drop with the “draggable” Attribute 278

12.5.1 Drag and Drop in Combination with the “FileAPI” 284

12.6 The Attributes “contenteditable” and “spellcheck” 288

Summary 290

Afterword 293


Index 295


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