This edition has more coverage on ajax and remote scripting, updated code to insure compliance with the most recent popular web browsers including ie, firefox and safari, improved examples to use more up-to-date and relevant programming techniques, reorganization of chapters to help streamline learning of related topics and to better integrate new topics. Chapter 1: introduction to javascript and the web. Chapter 2: data types and variables. Chapter 3: decisions, loops, and functions. Chapter 4: common mistakes, debugging, and error handling. Chapter 5: javascript -- an object-based language. Chapter 6: programming the browser. Chapter 7: html forms: interacting with the user. Chapter 8: windows and frames. Chapter 9: string manipulation. Chapter 10: date, time, and timers. Chapter 11: storing information: cookies. Chapter 12: dynamic html and the w3c document object model. Chapter 13: using activex and plug-ins with javascript. Chapter 14: ajax. Chapter 15: javascript frameworks.
The 4th edition feels very dated. Once you reach the point of accepting user data, the methods become a constant reminder of how much further along we are in web coding practices than we were in 2008. Plus the constant use of the HTML4 doctype dates this edition. I reached a point where I knew things were not good practice to follow and stopped reading. HTML in your JS feels dirty.
5th edition releases in March 2015. Hopefully this new edition will introduce current best practices.
I loved the format of this book - each example program is explained line by line (or block by block when that makes more sense). And the authors do this throughout the book! So when you get to later chapters, it's not assumed that you already know what's going on. Things are still explained in a clear, concise yet detailed, manner.
I decided to read this book, because I was looking for Javascript for starters, however I wasn't expecting a text for people with no exposure at all to software development. Despite of many boring chapters, explaining what programming actually is, I found there plenty of information that I was looking for. To summarize, it is a good introductory text to Javascript about both programming language and web development.
I always keep this book on my bookshelf for reference. I have never been a JavaScript fan but we all have to do it to get jobs done and this book has helped me out a lot over the years.