Part 3. Customization and advanced usage
These final 5 chapters cover the more complex aspects of jQuery UI, starting with widgets. In chapter 8 you’ll learn how to build your own widgets from scratch, using the same mechanism jQuery UI uses. In chapter 9 you’ll see how to customize any widget’s behavior using widget extensions.
You’ll learn in chapter 10 how to optimize your applications for production use, including the most important optimizations for building mobile sites. In chapter 11 you’ll build on this and create a complete application from scratch—one that runs fast on all devices. Chapter 12 looks under the hood of jQuery UI to uncover the tools that make jQuery UI work.