📖 Exploring JavaScript (ES2025 Edition)

“Exploring JavaScript (ES2025 Edition)” by Dr. Axel Rauschmayer is a comprehensive, modern deep dive into the core of the JavaScript language. It covers essential built-in data types, modularity, objects, classes, promises, and even the latest ES2025 features. The book is structured to be newcomer-friendly: you can get started quickly with modern features, while optional advanced sections allow you to explore topics in greater depth.

You can read it online for free in HTML form or purchase DRM-free offline packages (HTML, PDF, EPUB)—two tiers are available: “ebooks” (~USD 39) or “ebooks & extras” (~USD 59). The full PDF is around 802 pages. Extras include test-driven exercises and flashcards in HTML and Anki formats to aid learning.

Advanced learners will appreciate its quizzes, exercises, and in-depth coverage—readers praise it as “an exhaustive resource” that “cuts out the fluff,” with clear, to-the-point explanations and practical quizzes to reinforce learning. It’s highly regarded as “the best introductory book for modern JavaScript.”