That being said, you have to suffer through some bad jokes and unrealistic examples before the book realizes its true potential. The structure and mood of the book varies depending on the author of the chapter, giving an impression of the authors not necessarily deciding on a writing style before beginning the book. For example, whereas one topic includes a real-life case study the readers can relate to, another topic is exemplified through markup containing the “weaponry of fairies”. Luckily however, as the more advanced topics are covered, the examples improve drastically and reflect realistic usages which will be of great use for the reader.
The authors are clear on the scope of the book, which makes it very easy for the reader to fully understand what HTML5 is all about. Instead of keeping quiet about the topics not covered in the book, we get a clear overview of what they are and why they are not in the scope. They have included a couple of topics which are not part of the HTML5 specification but are so closely related or useful that the reader will benefit from learning about them. One of these topics are the Geolocation API. The authors are also able to create a great balance between what the future may provide (as HTML5 is still in its early stages) and the steps needed to take in order to ensure backwards compatibility. An example of this is the WAI-ARIA section of the book, where the readers are guided through the means of ensuring top accessibility both now and in the future.
A lot of developers are guilty when it comes to reading about a topic, but not trying it out themselves (or vice versa), which is why I always cheer when I reach the end of a chapter and find a “try it yourself” section containing exercises. Sadly, this book does not have that. Neither does it have a “What now?” section for the readers interested in more after finishing the book. Not having this doesn’t affect the quality of the book itself, but further engaging the reader would only be positive.