This book is must read for every team that is working on bigger JavaScript project. The author

has that kind of experience, he worked in the development of the Yahoo page and explains what

practices should be followed in order the code to be scalable, readable and maintainable.

If you are experienced developer you may know the most of this stuff. I have experience in OO programing

but I am relatively new in JavaScript so this book helped me to understand some practices and principles

that are specific for JavaScript. In my opinion the part where the configuration for build, documentation

tools is explained can be shorten because you have the specific tool documentation for that.

If JavaScript team reads this book before beginning of the project and implements the advices and practices

written here it will have much easier job later in the project.

This book works well as a supplement to other more technical JavaScript books. It is an easy read that had me checking bits of my code as a result. Like others, such as "JavaScript: The Good Parts" by Douglas Crockford, you don't need to read front-to-back as the sections are self-contained and well indexed.

Zakas is easily one of the best figures in front-end development, and specifically JavaScript. I recommend all of his books and various youtube videos as well. Heck, I even found him on front-end masters, and continue to learn from his easy to understand approach to grasping some very difficult concepts.

Few books leave you feeling tangibly better at practicing a computer language. This book is one of them. If you're not sure whether or not you have good habits and a good process for working on javascript projects, you will after completing this book.

Very good introductory to style guides. Also read "clean code" if you want more in depth style guidelines and don't have trouble reading java code.

I wanted something with a few more real world examples but I found the book to be like an english primer. telling me how the code should be written but with very basic examples that don get into the more complicated scenarios. If you are knew, read this to know how to format what you write and structure for longevity of the code base but don't expect to learn how to "write" code with it.

Very concise and easy to read. Lots of great organization tips to think about when writing in any language plus lots of JavaScript details that I had no idea about having mainly learned JavaScript through examples.

"Maintainable JavaScript" by Nicholas Zakas (O'Reilly 2012) is a very useful book for programmers who have just started writing javascript code or, for intermediate developers who would like to develop clean and maintainable code. The book is written in a very simple language that is easy to understand and follow.

As the title of the book suggests, the book is aimed at capturing the essential aspects of writing javascript code that is easy to maintain. I liked the flow of the book but I felt that the first few chapters in part 1 could be skipped if the reader is aware of the material.

In part 1 of the book (Style Guidelines), Zakas has given in-depth analysis of styling guidelines to follow that are sometimes skipped when writing large pieces of Javascript code. He touches upon styling guidelines such as: naming conventions, adding comments in the code, understanding the usage of semi-colons etc.,. Some good example use cases and the methodology of using the style guides is presented so that these ideas stick in your mind and become part of the programmers habits.

In part 2 (Programming Practices) - I especially liked the chapter 6 on `avoid global variables' since I have used global variables in my JavaScript but did not think through the caveats of using them. Similar to part 1 of the book, I liked the use cases that the author proposed to describe advantages and disadvantages of several programming aspects that are described in the section. In addition,one of the best described chapters in this section is the material on throwing your own errors (helping you to debug JavaScript code) which I do most of the time using firebug tool on Firefox. Even though this method works I might have to start using some of the techniques described by Zakas in the book, using fascade design pattern on top of objects that are not yours (very interesting outlook) etc.

Part 3 - I like this section a lot especially the material on minification, compression of JavaScript files as the script code adds time delay in loading of the page on the browser. Compression, minification techniques described by the author will definitely help with improving the load performance of the page in the browser.

Some of other things that would have helped me or any other intermediate JavaScript developer is inclusion of example or exercise files for some sections in `part 2'. Examples and exercise files would have helped the understanding of chapters 10, 11 and some sections in part 3 like chapter 17.

It is also interesting to know that author did make an attempt to include Html5 changes for JavaScript in some chapters of part 2 of the book.

I would recommend this book if you are an intermediate developer like me or novice developer for JavaScript code and would like to work towards methods for improving your code and writing a maintainable javascript code as this is book easy to understand and follow.

Very good book!

I particularily liked this book. The author is a JavaScript veteran who has gone through all anti-patterns himself. The books teaches you a lot of reasonable conventions to stick to. In most of the cases the author carefully explains why doing it this or that way is actually the best idea. One of the shocking things is his advice "don't test aginst null". But if you read the chapter then it all makes sense. I actually learned a lot about the language while reading this book. I still don't like the language but now I can see how smart peaople have established conventions around the sometimes idiotic rules of the language. Finally, this book also talks about tools you can use to automate the testing and buildingof your Javascript files.

This is a must read for any javascript programmer.

Its is written in a style that allows easy reading and everything is explained with good examples.

Questo libro è breve, conciso ed utilissimo. Non vi insegnerà il linguaggio ma i modi migliori per scrivere codice pulito, leggibile e mantenibile. Se siete principianti vi sarà utilissimo e anche se siete esperti potrebbe darvi qualche interessante dritta.