Book excerpt: This hands-on book shows you how to work with HTML5, JavaScript MVC frameworks, and the latest W3C specifications to build mobile and desktop web apps that are widely supported across all browsers and devices. You’ll quickly master building client-side applications with a loosely coupled backend infrastructure that supports offline clients. Learn how to incorporate web storage, web workers, geolocation, Device Orientation, and WebSockets into your application architecture, using real-world examples. If you’re familiar with server-side programming and understand the basics of HTML5, this book is for you. Assemble a coherent architectural whole from HTML5’s complex collection of parts Gain a clear understanding of client-side architecture and the “mobile first” approach Design, create, and tune eye-catching and robust mobile web apps Explore how the top five JavaScript MVC frameworks interact with the server Learn best practices for setting up a raw WebSocket server Examine how sites such as Google, Twitter, and Amazon store data Use real-world methods for applying geolocation, and learn the pitfalls of various implementations Process images and other data in the background with Web Workers