JS Essentials: The JavaScript Engine

Everything you need to know about the JavaScript engine, scopes, closures, the event queue, and how to apply this knowledge.

Table of Contents

— Prerequisites
— Definitions
— The Call Stack
— — 1. Variable & Function Declarations (creation phase)
— — 2. Execution
— Scope and The Scope Chain
— — Function/Lexical Scope
— — Block Scope
— The Event Loop
— Code Examples
— — Simple Closure
— — Blocking Code
— — Defer a Function
— — Memoize with Closures
— Resources and Links