JavaScript Tutorial
Object-Oriented Programming (OOP) in JavaScript
Table of Contents
- Introduction
- What is Object-Oriented Programming (OOP)?
- Why Use OOP in JavaScript?
- How OOP Works in JavaScript
- Key OOP Principles in JavaScript
- Best Practices for OOP in JavaScript
FAQs on OOP in JavaScript
A class is a blueprint or template for creating objects.
An object is an instance of a class with specific properties and methods.
OOP makes your code more modular, reusable, and easier to maintain, especially for larger projects. It also helps in modeling real-world entities.
Prototypes are the older way of achieving inheritance and object creation.
Classes are a modern and more intuitive syntax introduced in ES6.
JavaScript does not support multiple inheritance directly but can achieve similar behavior using mixins (functions that add properties or methods to a class).
Encapsulation helps to restrict access to certain parts of an object, ensuring that sensitive data is protected and can only be accessed or modified in a controlled manner.
Abstraction hides unnecessary details and exposes only the essential features, making code simpler, more readable, and easier to maintain.
Inheritance allows code reuse by letting a child class inherit properties and methods from a parent class. This reduces redundancy and improves maintainability.
Polymorphism in JavaScript is implemented by overriding methods in child classes. This allows different objects to respond to the same method call in their own way.
Static methods are methods defined on the class itself, not on instances of the class.
