Asen Bozhilov is web developer with years of experience in web technologies. Currently, he is working on XULRunner applications using JavaScript and XUL. He has a bachelor's degree in computer science. In his spare time, he likes to experiment with new technologies and programming languages. His interests are mostly in the computer sciences, but he also enjoys sport activities.

He has reviewed other JavaScript books, such as Maintainable JavaScript, JavaScript Patterns, and JavaScript for PHP developers.

Ali Farhadi is a senior web developer and system administrator living in Mashhad, Iran. He is passionate about working on open source technology and has contributed to the major php frameworks, CakePHP, and Lithium.

He is also one of the pioneers in the Persian node.js community and has contributed to the core project since 2009. He has also authored a few open source projects notably the HTML5Sortable jQuery plugin and SMPP module for node.js.

You can read more about him and his works at his website http://farhadi.ir.

Ed Wildgoose grew up in the time when a ZX81 was cutting edge and spent his formative years slaving away in the finance world, before deciding that the way ahead was to start slaving away for even longer hours and less money as his own boss. He enjoys learning about the art of IT for its own sake and has played with most common (and uncommon) programming languages and tools over the years (Did anyone else enjoy using Haskell in the early 90s?). He has developed projects on Mac, Windows, and Linux over past years, but most currently favors Linux for backend servers and Mac on the desktop.

He currently owns MailASail (http://mailasail.com), a boutique, which supplies services for users with satellite phones and roaming cellular devices. MailASail is a leading supplier of satellite hardware and airtime, but specialize in offering in-house solutions, which optimize TCP data over the expensive satellite links, that is, you can grab your iPhone and read your email from the middle of an ocean, desert, or glacier, for a very affordable cost! Their customers range from BBC nature documentary creators through to ocean rowers.