You Don't Know JS: this & Object Prototypes

This book demystified JavaScript's 'this' keyword and prototype system for me. Kyle Simpson's explanation of how 'this' binding works in different contexts is incredibly clear and practical. The way he breaks down the four rules of 'this' binding (default, implicit, explicit, and new) made everything click. The sections on prototypes and object delegation are equally brilliant - I finally understand how JavaScript's object system really works under the hood. The examples are perfectly crafted to illustrate each concept, and the progression from basic to advanced topics is masterful. This book has made me a much more confident JavaScript developer. The insights about how prototypes work with modern JavaScript patterns and frameworks are invaluable. Another essential book in the series.