David Herman 
Effective JavaScript [PDF ebook] 
68 Specific Ways to Harness the Power of JavaScript

"It’s uncommon to have a programming language wonk who can speak in such comfortable and friendly language as David does. His walk through the syntax and semantics of Java Script is both charming and hugely insightful; reminders of gotchas complement realistic use cases, paced at a comfortable curve. You’ll find when you finish the book that you’ve gained a strong and comprehensive sense of mastery." -Paul Irish, developer advocate, Google Chrome "This is not a book for those looking for shortcuts; rather it is hard-won experience distilled into a guided tour. It’s one of the few books on JS that I’ll recommend without hesitation." -Alex Russell, TC39 member, software engineer, Google In order to truly master Java Script, you need to learn how to work effectively with the language’s flexible, expressive features and how to avoid its pitfalls. No matter how long you’ve been writing Java Script code, Effective Java Script will help deepen your understanding of this powerful language, so you can build more predictable, reliable, and maintainable programs. Author David Herman, with his years of experience on Ecma’s Java Script standardization committee, illuminates the language’s inner workings as never before-helping you take full advantage of Java Script’s expressiveness. Reflecting the latest versions of the Java Script standard, the book offers well-proven techniques and best practices you’ll rely on for years to come. Effective Java Script is organized around 68 proven approaches for writing better Java Script, backed by concrete examples. You’ll learn how to choose the right programming style for each project, manage unanticipated problems, and work more successfully with every facet of Java Script programming from data structures to concurrency. Key features include Better ways to use prototype-based object-oriented programming Subtleties and solutions for working with arrays and dictionary objects Precise and practical explanations of Java Script’s functions and variable scoping semantics Useful Java Script programming patterns and idioms, such as options objects and method chaining In-depth guidance on using Java Script’s unique "run-to-completion" approach to concurrency