You Don't Know JS Yet: Scope & Closures

(5/5)

Review by Joshua Morris on October 1, 2021

Review

This book is a masterpiece of technical writing. Kyle Simpson's explanation of scope and closures in JavaScript is the most comprehensive and clear treatment I've ever read. The way he breaks down lexical scoping, hoisting, and closure mechanics is absolutely brilliant. I thought I understood closures before reading this book, but I was wrong - this book showed me the depth and nuance I was missing. The examples are perfectly chosen to illustrate each concept, and the progression from basic to advanced topics is masterful. This book has made me a significantly better JavaScript developer. The insights about how closures work with modules, callbacks, and modern JavaScript patterns are invaluable. Essential reading for any serious JavaScript developer.

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