Professional JavaScript for Web Developers

Get up to date on the latest ways to use JavaScript in web development If you want to achieve JavaScript′s full potential, it is critical to understand its nature, history, and limitations. To that end, this updated version of the bestseller by veteran author and JavaScript guru Nicholas C. Zakas covers JavaScript from its very beginning to the present–day incarnations including the DOM, Ajax, and HTML5. Zakas shows you how to extend this powerful language to meet specific needs and create dynamic user interfaces for the web that blur the line between desktop and internet. By the end of the book, you′ll have a strong understanding of the significant advances in web development as they relate to JavaScript so that you can apply them to your next website. Professional JavaScript for Web Developers : Offers a detailed discussion of the components that make up a JavaScript implementation Zeroes in on new and emerging APIs such as the Selectors API, Web Workers, and Cross–Document Messaging Explores object–oriented programming in JavaScript Shows how to implement drag and drop file upload with Ajax and the File API Highlights the new core language features introduced in ECMAScript5 Explains how to work with data formats such as XML and JSON Looks at what′s coming in ECMAScript Harmony Walks you through creating offline–capable web applications wrox.com Programmer Forums Join our Programmer to Programmer forums to ask and answer programming questions about this book, join discussions on the hottest topics in the industry, and connect with fellow programmers from around the world. Code Downloads Take advantage of free code samples from this book, as well as code samples from hundreds of other books, all ready to use. Read More Find articles, ebooks, sample chapters, and tables of contents for hundreds of books, and more reference resources on programming topics that matter to you. Wrox Professional guides are written by working developers to address everyday needs. They provide examples, practical solutions, and expert education in new technologies, all designed to help programmers do a better job.

FOREWORD xxxi INTRODUCTION xxxiii CHAPTER 1: WHAT IS JAVASCRIPT? 1 CHAPTER 2: JAVASCRIPT IN HTML 13 CHAPTER 3: LANGUAGE BASICS 25 CHAPTER 4: VARIABLES, SCOPE, AND MEMORY 85 CHAPTER 5: REFERENCE TYPES 103 CHAPTER 6: OBJECT–ORIENTED PROGRAMMING 173 CHAPTER 7: FUNCTION EXPRESSIONS 217 CHAPTER 8: THE BROWSER OBJECT MODEL 239 CHAPTER 9: CLIENT DETECTION 271 CHAPTER 10: THE DOCUMENT OBJECT MODEL 309 CHAPTER 11: DOM EXTENSIONS 357 CHAPTER 12: DOM LEVELS 2 AND 3 381 CHAPTER 13: EVENTS 431 CHAPTER 14: SCRIPTING FORMS 511 CHAPTER 15: GRAPHICS WITH CANVAS 551 CHAPTER 16: HTML5 SCRIPTING 591 CHAPTER 17: ERROR HANDLING AND DEBUGGING 607 CHAPTER 18: XML IN JAVASCRIPT 641 CHAPTER 19: ECMASCRIPT FOR XML 671 CHAPTER 20: JSON 691 CHAPTER 21: AJAX AND COMET 701 CHAPTER 22: ADVANCED TECHNIQUES 731 CHAPTER 23: OFFLINE APPLICATIONS AND CLIENT–SIDE STORAGE 765 CHAPTER 24: BEST PRACTICES 801 CHAPTER 25: EMERGING APIS 835 APPENDIX A: ECMASCRIPT HARMONY 857 APPENDIX B: STRICT MODE 877 APPENDIX C: JAVASCRIPT LIBRARIES 885 APPENDIX D: JAVASCRIPT TOOLS 891 INDEX 897

Nicholas C. Zakas is a front–end architect who honed his skills working at Yahoo! for five years. He has worked in web development for over a decade, developing web solutions for some of the largest companies in the world. He is the author of previous editions of Professional JavaScript for Web Developers and a coauthor of Professional Ajax .