Hi Kris, Designing web pages requires a thorough knowledge, because depending on this architecture only designers can implement new technologies. Does your book teach the architectural view of web pages along with Ajax? Do you have enough idea implemented in the book about the architecture of Ajax? It would help designers to build a efficient web page if Ajax architecture is known.
In this book, readers will learn about the technologies used to create Ajax, their importance in the process and how to create a reusable, scalable Ajax engine for professional development. They will learn how to create their own custom Ajax components that can be reused across multiple projects
So i believe you will be able to find important points in that book, which will help in building better AJAX applications.