This powerful new book introduces cross-platform app design as an excellent starting point for mastering app development. The book contains numerous applications that you can adapt to different projects. You can use this book for independent study or for your project courses. The book introduces HTML5, CSS3, JavaScript, jQuery Mobile, Node.js, JSON, localStorage, sessionStorage, NoSQL using MongoDB, SQL using MySQL, templating using handlebars, and maps. A strong app-centric view emphasizes appropriate subsets of these technologies to help you develop non-trivial apps. While apps continue to evolve and change, the technologies presented form the backbone of future cross-platform app development. You will learn to work with all major mobile and web platforms using the book's active learning approach that has you typing code in parallel as the apps are developed. Exercises further encourage you to make changes to the code and evaluate resulting app behavior.