JavaScript: The Advanced Concepts

Research to gain a deeper understanding of how JavaScript works under the hood.

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Table of Contents

1. JavaScript Foundations

   • JS Engine
   • Interpreter
   • Compiler
   • ECMAScript
   • Writing optimised code
   • Inline Caching
   • Hidden Classes
   • Call Stack
   • Memory Heap
   • Garbage Collection
   • Memory Leaks
   • JavaScript Runtime
   • Web Browser API
   • The Heap
   • The Stack
   • The Web API Container
   • The Callback Queue
   • The Event Loop
   • Node.js
   • Lexical Environment
   • Scope
   • Execution Context
   • Global Execution Context
   • Functional execution context
   • Hoisting
   • Scope Chain
   • This
   • Function Currying
   • Context vs Scope

2. Types

   • Primitive Types
   • Number
   • String
   • Boolean
   • Null
   • Undefined
   • Symbol
   • Non Primitive Types
   • Object
   • Pass By Value (primitives)
   • Pass by Reference (objects)
   • Type Coercion

3. Closures and Prototypal Inheritance

   • Higher Order Functions
   • Closures
   • Memory efficiency
   • Encapsulation
   • Prototypal Inheritance
   • Manually creating a prototype chain
   • Inheritance using Object.create()
   • Only functions have the .prototype property

4. Object Oriented Programming

   • Class-based vs Prototype-based
   • Factory Functions
   • Using Object.create()
   • Using Constructor Functions
   • Using ES6 Classes
   • More of 'This'
   • Implicit Binding
   • Explicit Binding
   • New Binding
   • Lexical Binding
   • Window Binding
   • Inheritance
   • Public & Private - Protected properties and methods
   • Internal and external interface
   • Protected properties
   • Read-only properties
   • Private properties
   • The Four Pillars of OOP
   • 1. Encapsulation
   • 2. Abstraction
   • 3. Inheritance
   • 4. Polymorphism

5. Functional Programming

   • Pure Functions
   • Idempotence
   • Imperative vs Declarative
   • Immutability
   • Higher Order Functions
   • Currying
   • Partial Application

6. Object Oriented Programming vs Functional Programming

   • Key Differences
   • Inheritance vs Composition

7. Asynchronous JavaScript

   • How Does the Browser Execute Asynchronous Code?
   • JavaScript's Execution
   • The thread of execution
   • Deferred code execution
   • Web APIs
   • Callbacks
   • Callback hell
   • Promises
   • Async/Await
   • ES9
   • Array Destructuring
   • Array Literals
   • Object Destructuring
   • Object Literals
   • Finally
   • For await of
   • Job Queue
   • Parallel, Sequence, Race
   • Threads
   • Concurrency and Parallelism

8. The Module Pattern

Acknowledgments

• Andrei Neagoie

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