(The rapid development of mobile Internet has brought new demands and challenges to web development. The birth of HTML5 provides more support and possibilities for mobile web functions. At present, with the rapid development of mobile devices, different screen sizes, and storage and performance constraints, how to combine the functions of HTML5 to create high-performance and responsive mobile websites on multiple platforms is the primary task faced by web developers Challenge.This book provides a solution to this challenge. By reading this book, you will learn how to effectively use the latest HTML5 features for mobile websites across multiple mobile platforms.The book is divided into 10 chapters. Build fast and responsive HTML5 mobile websites for many mainstream mobile application platforms such as IOS, Android, Windows Phone and BlackBerry from the perspectives of mobile web pages, device side configuration and optimization, variable interaction, responsive design, device access, debugging, performance testing and rich media.The author of this book is a member of the HTML5 boilerplate project, mobile boilerplate( http://h5bp.com/mobile )Major developers of. This book is tailored for programmers who are committed to realizing high-performance, responsive and cross platform HTML5 mobile websites. It is also suitable for readers interested in mobile web development.)