JavaScript runs on every browser, every server (Node.js), and increasingly on the edge. The language evolves annually with new ECMAScript features, and books even a few years old can miss significant additions. This list focuses on titles that cover modern JavaScript (ES2020+) and teach the language properly rather than just showing you framework syntax.
Last reviewed: March 2026. All links and availability verified.
Eloquent JavaScript, 4th Edition
Marijn Haverbeke updated Eloquent JavaScript for November 2024 with current syntax, async programming patterns, DOM manipulation, and Node.js. It takes readers from basics through building complete programs. Also free to read online at eloquentjavascript.net. The best free-to-read JavaScript book, and one of the best at any price.
- Author: Marijn Haverbeke
- Published: November 2024 (No Starch Press, 4th Edition)
- Also free at: eloquentjavascript.net
- Best for: Learning JavaScript properly from scratch
- Amazon: Buy on Amazon
JavaScript: The Definitive Guide, 7th Edition
David Flanagan’s O’Reilly reference was completely rewritten for modern JavaScript through ES2020. Covers classes, modules, iterators, generators, promises, async/await, and metaprogramming. This is the reference book for working JavaScript developers who need to look up how something works and understand the edge cases.
- Author: David Flanagan
- Published: June 2020 (O’Reilly, 7th Edition)
- Best for: Comprehensive reference for working developers
- Amazon: Buy on Amazon
You Don’t Know JS Yet: Get Started, 2nd Edition
Kyle Simpson’s YDKJS series dives deep into how JavaScript actually works under the hood. “Get Started” is the first of six books, and the full series is also free on GitHub. If you want to move beyond using JavaScript to truly understanding its mechanics (scope, closures, prototypes, async patterns), this series is unmatched.
- Author: Kyle Simpson
- Published: January 2020
- Also free at: github.com/getify/You-Dont-Know-JS
- Best for: Deep understanding of JavaScript internals
- Amazon: Buy on Amazon
| Level | Book |
|---|---|
| Learning JavaScript | Eloquent JavaScript, 4th Ed (free online) |
| Professional reference | JavaScript: The Definitive Guide, 7th Ed |
| Deep language understanding | You Don’t Know JS Yet series (free on GitHub) |