You might wonder: if AI can write JavaScript for me, why bother reading a book about it?
Here's the thing — AI writes the language, but you still have to read it, review it, debug it, and own it. If you don't understand why certain JavaScript patterns are dangerous (global variables, the == operator, eval, implicit type coercion), you won't catch it when an AI confidently generates buggy or fragile code.
Crockford's core lesson — that knowing what to avoid is just as important as knowing what to use — is more relevant than ever. AI tools can produce all of JavaScript's bad parts just as fluently as the good ones. A developer who has internalized this book will spot those pitfalls instantly. One who hasn't won't.
Beyond that, the thinking this book models — disciplined subsetting, valuing readability and maintainability, resisting cleverness for its own sake — is exactly the mindset that makes someone a great collaborator with AI tools, not just a passive consumer of them.
At 170 pages, it's one of the highest signal-to-noise books in software development. If you work with the web in any capacity, it earns its place on your shelf.