Yeah, it's good. Working with with learners, I always recommend his books (particularly the ES6 one) as reference once they're past the basics. He's very good a

Yeah, it's good. Working with with learners, I always recommend his books (particularly the ES6 one) as reference once they're past the basics. He's very good and not someone who disseminates much information that isn't just practical explanations of and realistic usecases for spec. Slightly dry, but very concise. This one's [naturally] slightly more in depth, but it's IMO a necessary addendum to previous books/articles -- something that builds on them for slightly advanced usecases. Sibling comment says you'll write better code in 99% of jobs if you don't read it: I don't think that's true at all. Deep copying, for example isn't uncommon.