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Br yant

Jones

Shelve in

Web Design / HTML

User level:

Intermediate–Advanced

www.apress.com

SOURCE CODE ONLINE

BOOKS FOR PROFESSIONALS BY PROFESSIONALS

Pro HTML5 Performance

Pro HTML5 Performance is a practical guide to building extremely fast, lightweight,

and scalable web sites using techniques and best practices that are fully standards-

compliant. It will help you squeeze every last ounce of performance from your code

and give your applications unrivaled speed and cost-efficiency.

You’ll learn how to:

• Optimize HTML5, CSS, and JavaScript for client-side performance

• Reduce your code’s bandwidth to achieve speed and cost savings

• Target multiple devices from the same page

• Get your HTML5 content to gracefully degrade on older browsers

• Create advanced applications, such as animations, with a light footprint

• Make HTML5’s semantic markup work for you

Pro HTML5 Performance strikes a balance between imparting best-practice infor-

mation for building from the ground up and demonstrating instantly applicable

techniques to help solve issues arising within existing projects. With its wealth of

practical advice, focused tips, and code samples, it will help you master techniques

for creating your own high-performance web sites. Get started creating high-perfor-

mance web sites today!

iii

Contents at a Glance

 Foreword .............................................................................................................................xiii

 About the Authors...............................................................................................................xiv

 About the Technical Reviewer .............................................................................................xv

 Acknowledgments ..............................................................................................................xvi

 Part 1: Introduction ................................................................................................................1

 Chapter 1: Introduction .........................................................................................................3

 Part 2: Performance Basics ...................................................................................................7

 Chapter 2: Development Principles ......................................................................................9

 Chapter 3: Performance Guidelines ....................................................................................21

 Chapter 4: Responsive Web Design ....................................................................................37

 Chapter 5: Understanding the Web Reuse Pattern .............................................................51

 Part 3: Building a Web Site ..................................................................................................65

 Chapter 6: Page Template ...................................................................................................67

 Chapter 7: Navigation ..........................................................................................................81

 Chapter 8: Masthead .........................................................................................................107

 Chapter 9: Footer ...............................................................................................................115

 Chapter 10: Fractal Design Patterns .................................................................................131

 Chapter 11: Link Control ...................................................................................................141

 Chapter 12: Sidebox Control .............................................................................................155

 Chapter 13: Button Control ................................................................................................165

 Chapter 14: Price Control ..................................................................................................181

 Chapter 15: Product Control ..............................................................................................193

 Chapter 16: Table Control ..................................................................................................205

 Chapter 17: Tab Control .....................................................................................................223

 Chapter 18: Form Controls ................................................................................................247

 Index ..................................................................................................................................275

■ ■ ■

CHAPTER 1

Introduction

Not long ago, while interviewing candidates for job openings, we discovered some appreciable knowledge

gaps in the performance and scalability areas among our fellow developers. While many developers were

fully versed in their server-side language of choice, they seemed to have no more than an anecdotal level

of learning in HTML5 and CSS3. (By “anecdotal level,” we mean they’d seen examples of HTML5 and

CSS3—or perhaps had read a synopsis of the new aspects of HTML5—and drew conclusions from those

patterns but missed some of the deeper meaning behind them.) In other words, we found a lot of people

who could tell us how to do something but not why they’d want to do that something. More importantly,

they didn’t know how their favored techniques could make code perform better or reduce the time it took

them to get work done. Seeing in this situation a great opportunity to help fellow developers elevate their

front-end game, we decided to write this book.

The two of us met while working for a Fortune 50 company second only to Amazon in e-commerce

business. In other words, we got to see what did and didn’t work at the high end of the scale. In addition,

we were on a team tasked with writing a framework to be used across the company’s site, a site consisting

of tens of thousands of pages. Also, we were starting from scratch during a conversion to MVC. So while

our code had to perform extremely well for each visitor (to the tune of 80 million visitors a month), it also

had to be efﬁcient enough to meet the needs of many teams across the company— literally dozens of

client teams.

The things we hope to pass on in this book derive from the lessons learned in that endeavor and from

the unique perspective our experience provided: a deeper understanding of HTML5/CSS3 performance

and, hopefully, some game-changing patterns that will elevate your front-end skills to the next level. We’d

like to think we might even see a paradigm shift in web development, at least for large and complex sites.

A Live Site with Working Code Examples

In order to get the concepts and techniques we cover in this book across to as many readers as possible, we

created a live site that has the working code examples shown in the book, as well as a responsive

e-commerce POC. You can ﬁnd the sample site at http://www.clikz.us

Figure 1-1 shows our sample site.

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pp_car

2013-09-06

很好的文档，实用！

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