Absolutely. Here is why mastering this specific book is the difference between being a "framework user" and a true "JavaScript developer."
JavaScript: The Definitive Guide is like having a wise, meticulous mentor on your shelf. You won't read it cover-to-cover on a weekend. But when you need to understand Reflect , debug a closure leak, or explain to your team why typeof null === "object" , you'll reach for it again and again. javascript the definitive guide