Peter Lubbers - Pro HTML 5 Programming

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xii ■ CONTENTS Adding Storage Code............................................................................................................................ 256 Adding Offline Event Handling .............................................................................................................. 256 Summary .......................................................................................................................257 ■Chapter 11: The Future of HTML5 ........................................................................259 Browser Support for HTML5 ..........................................................................................259 HTML Evolves.................................................................................................................259 WebGL .................................................................................................................................................. 260 Devices................................................................................................................................................. 262 Audio Data API...................................................................................................................................... 263 Video Improvements............................................................................................................................. 263 Touchscreen Device Events.................................................................................................................. 263 Peer-to-Peer Networking...................................................................................................................... 266 Ultimate Direction................................................................................................................................. 267 Summary .......................................................................................................................267 ■Index........................................................................................................................269
Foreword In June 2004, representatives from the semantic web community, major browser vendors, and the W3C met in San Jose, California to discuss the standards body’s response to the rise of web applications. At the end of the second day, a vote was held to decide whether the W3C should augment HTML and the DOM to address the new requirements of web applications. Minutes from the event record the anonymous and curious result, “8 for, 14 against.” This schism lead to a divergence in effort: two days later, the WHATWG was formed from the major browser vendors to solve emerging issues. Meanwhile, the W3C pushed forward with the XHTML2 specification, only to drop it five years later to focus on an aligned HTML5 effort with the WHATWG. Now, six years since, we stand to benefit greatly from the passionate minds that have designed HTML5. The features both codify de facto standards that have been in use for years and lay the groundwork for next-generation web applications. Putting them to use means a more engaging and responsive web experience for your users and, oftentimes, far less code for you. In this book, you'll find a well-designed learning curve bringing you up to speed on the features within HTML5 and its associated specifications. You'll learn best practices of feature detection, appropriate use cases, and a lot of the whys that you won’t find in the specifications. The code examples are not plain, trivial uses of each API but instead lead you through building actual web applications. I hope this book is able to serve you well, and I hope you’ll be as excited about the next generation of the web as I am. Paul Irish Google and jQuery Dev Relations and Lead Developer for Modernizr xiii
Page 1 and 2: THE EXPERT’S VOICE ® IN WEB DEVE
Page 3 and 4: ■ ■ ■ Pro HTML5 Programming P
Page 5 and 6: For my beautiful wife, Vittoria, an
Page 7 and 8: Contents ■Foreword ..............
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Page 17 and 18: About the Technical Reviewer � Pa
Page 19 and 20: Introduction HTML5 is brand new. In
Page 21 and 22: C H A P T E R 1 ■ ■ ■ Overvie
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C H A P T E R 3 ■ ■ ■ Working
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Audio and Video Codecs CHAPTER 3
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Table 3-1. Browser support for HTML
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MEDIA FOR EVERYONE CHAPTER 3 ■ WO
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CHAPTER 3 ■ WORKING WITH HTML5 AU
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Table 3-4 shows a few of the read-o
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find the actual frame since the vid
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LOSING VIEWERS IN THE OF AN EYE CH
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C H A P T E R 4 ■ ■ ■ Using t
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A device can use any of the followi
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Figure 4-1. HTML5 Geolocation brows
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CHAPTER 4 ■ USING THE HTML5 GEOLO
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Listing 4-6. The Haversine formula
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Listing 4-9. Adding the loadDemo()
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THE EASIEST WAY TO TRAVEL CHAPTER 4
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var deltaLatitude = toRadians(latit
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Practical Extras CHAPTER 4 ■ USIN
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Show Me on a Google Map CHAPTER 4
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CHAPTER 5 ■ USING THE COMMUNICATI
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var defaultTitle = "Portal [http://
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Send Notification CHAPTER 5 ■ U
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Figure 5-4. Difference between clie
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“SEEMINGLY ARBITRARY” TIMES CHA
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crossOriginRequest.upload.onprogres
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Figure 6-1. The complexity of real-
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Listing 6-2. The WebSocket interfac
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Listing 6-4. HTTP response header H
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Figure 6-4. Latency comparison betw
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EXISTING WEBSOCKET SERVERS CHAPTER
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CHAPTER 6 ■ USING THE HTML5 WEBSO
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def terminate(self): self.ready_sta
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Basic API Usage CHAPTER 6 ■ USING
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HTML5 WebSocket / Geolocation Track
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C H A P T E R 11 ■ ■ ■ The Fu
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CHAPTER 11 ■ THE FUTURE OF HTML5
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280 ■ INDEX building application
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284 ■ INDEX stopping Web Workers,
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Peter Lubbers - Pro HTML 5 Programming

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