Tutorial / Module 3

Objects, Arrays & Iteration

Object literals, array methods, spread and destructuring, iterators, generators, symbols, and weak collections.

3.1 JavaScript Object Fundamentals: Literals, Properties, Methods, and Shorthand Syntax Read 3.2 JavaScript Array Methods Cheatsheet: map, filter, reduce, and the Modern Toolkit Read 3.3 JavaScript Spread and Destructuring: The Modern Way to Compose and Unpack Data Read 3.4 JavaScript Property Descriptors and defineProperty: Writable, Enumerable, Configurable, and Getters/Setters Read 3.5 JavaScript Iterators and Generators: Building Lazy Sequences Read 3.6 JavaScript Symbols Explained: The Identifier Type Almost No One Uses Read 3.7 JavaScript WeakMap, WeakSet, and WeakRef: When Regular Maps Hold On Forever Read

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