This part of the book, Chapters 2 though 12, documents the core JavaScript language and is meant to be a JavaScript language reference. After you read through it once to learn the language, you may find yourself referring back to it to refresh your memory about some of the trickier points of JavaScript:
Chapter 2, Lexical Structure
Chapter 3, Datatypes and Values
Chapter 4, Variables
Chapter 5, Expressions and Operators
Chapter 6, Statements
Chapter 7, Objects and Arrays
Chapter 8, Functions
Chapter 9, Classes, Constructors, and Prototypes
Chapter 10, Modules and Namespaces
Chapter 11, Pattern Matching with Regular Expressions
