JavaScript is a multi-paradigm language and can be written following different programming paradigms. A programming paradigm is essentially a bunch of rules that you follow when writing code, to help you solve a particular problem. That's what the four pillars are. They're software design principles to help you write clean

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The Four Pillars of Object-Oriented Programming by Kealan Parr. Parr: The four Pillars are the core principles of object-oriented programming. The Pillars: The core principles are: Object Oriented Programming (OOP), Object- Oriented Design (OOD), and Object-Driven Development (ODD)

The Four Pillars of Object-Oriented Programming

Abstraction in Object-Oriented Programming

Encapsulation in Object-Oriented Programming

Inheritance in Object-Oriented Programming

Polymorphism in Object-Oriented Programming