Ved Antani is an AVP (engineering) at Myntra. Before Myntra, he worked with Electronic Arts, NetApp, and Oracle. Ved is passionate about programming and has been programming in JavaScript since 2005. He has extensive experience in building scalable systems and mobile applications. Ved is a minimalist, a father, and an avid tea drinker.I would like to thank my wife, Meghna, for her support. She was always there to encourage and help me when I needed it the most Gaston C. Hillar is an Italian and has been working with computers since he was 8 years old. In the early 80s, he began programming with the legendary Texas TI-99/4A and Commodore 64 home computers. Gaston has a bachelor's degree in computer science and graduated with honors. He also holds an MBA, in which he graduated with an outstanding thesis. At present, Gaston is an independent IT consultant and a freelance author who is always looking for new adventures around the world.He has been a senior contributing editor at Dr. Dobb's and has written more than a hundred articles on software development topics. Gatson was also a former Microsoft MVP in technical computing. He has received the prestigious Intel® Black Belt Software Developer award seven times.He is a guest blogger at Intel® Software Network (http://software.intel.com). You can reach him at gastonhillar@hotmail.com and follow him on Twitter at http://twitter.com/gastonhillar. Gaston's blog is http://csharpmulticore.blogspot.com.He lives with his wife, Vanesa, and his two sons, Kevin and Brandon. Stoyan Stefanov is a Facebook engineer, author, and speaker. He talks regularly about web development topics at conferences and his blog www.phpied.com, and also runs a number of other sites, including JSPatterns.com-a site dedicated to exploring JavaScript patterns. Previously at Yahoo!, Stoyan was the architect of YSlow 2.0 and creator of the image optimization tool Smush.it. A "citizen of the world", Stoyan was born and raised in Bulgaria, but is also a Canadian citizen, currently residing in Los Angeles, California. In his offlne moments, he enjoys playing the guitar, taking fling lessons, and spending time at the Santa Monica beaches with his family.I'd like to dedicate this book to my wife Eva and my daughters Zlatina and Nathalie. Thank you for your patience, support, and encouragement.To my reviewers who volunteered their time reviewing drafts of this book and whom I deeply respect and look up to: a big thank you for your invaluable inputs. Kumar Chetan Sharma studied to be an electronics engineer and has always wanted to build an ultimate sound system. He then, by chance, got a part time job as a trainee HTML guy. From there he picked up CSS and JavaScript and there was no looking back. It was the time when JavaScript was used to validate forms or create fancy DHTML effects and IE6 was the only browser the world knew. He has been developing web applications since then, using LAMP stack. He has worked on white label social networking applications to web control panels for telecom and networked electrical charger infrastructures. He currently works as a frontend engineer for Yahoo! Search.