JS Functional Programming

farid46Author

Table of Contents

Functional Programming in JavaScript

Core Characteristics of Functional Programming

1. Pure Functions

Example

Non-Pure Function (Side Effect)

2. Immutability

Bad Practice (Mutable)

Functional Approach (Immutable)

3. First-Class Functions

Example

4. Higher-Order Functions

Example

Built-in JavaScript Methods Supporting Functional Programming

Example: Functional Data Processing

Imperative Approach

Functional Approach

Declarative vs Imperative Programming

Imperative Example

Declarative Example

Advantages of Functional Programming

Summary

Javascript