Now available on Amazon, What Every JavaScript Developer Should Know About ECMAScript 2015 is the book I'd like to read about the new features in the JavaScript language. The book isn't a reference manual or an exhaustive list of everything in the ES2015 specification. Instead, I purposefully selected what I think are the important features we will use in everyday programming. I expect the reader will already have a good understanding of the pre-2015 JavaScript language.

The book will be free for the rest of this week.

Chapters include:

Working with variables and parameters

Classes

Functional features

Asynchronous JavaScript

Modules

APIs

Special thanks to Ruben Bartelink and Porter T. Baer for feedback on the early drafts.