This book is for people who have had some experience with JavaScript, and want to have a better, deeper understanding of how it works and how to use it well.

Grokking Modern JavaScript, In The Wild

Develop your skills with 35 interactive exercises on CodePen. Best of all, there's no setup required (a web browser is all you need).

This book is a guide for the transition between ECMAScript 5 and 6. It is not specific to any JavaScript environment, so it is equally useful to web developers as it is Node.js developers.

This book is an exploration of the object-oriented nature of JavaScript.