Course description

While JavaScript isn't purely object-oriented like Java or C++, it supports Object-Oriented Programming (OOP) concepts through prototypes. Here's a breakdown of the key OOP concepts in JavaScript:

1. Objects and Prototypes

• Objects: These are fundamental building blocks in JavaScript. They represent real-world entities and encapsulate data (properties) and functionality (methods) related to that entity. Imagine a car object that has properties like color, make, and model, and methods like accelerate and brake.
• Prototypes: JavaScript uses prototypes for inheritance. An object inherits properties and methods from its prototype. Think of it as a blueprint that defines the core characteristics of an object. Many objects can be based on the same prototype, promoting code reusability.

2. Encapsulation

• Encapsulation is the idea of bundling data (properties) and methods together within an object. You can control access to this data by defining methods that interact with it. This helps protect the data from unintended modification and promotes data integrity.

3. Inheritance

• Inheritance allows you to create new objects (subclasses) that inherit properties and methods from existing objects (superclasses). This promotes code reusability and creates a hierarchy of related objects. For example, a "Sedan" object could inherit properties and methods from a general "Car" object, and then add specific sedan-related properties.

4. Polymorphism

• Polymorphism allows objects of different types to respond differently to the same method call. This flexibility makes code more adaptable and easier to maintain. An example might be a "draw" method that works differently for a "Shape" object depending on whether it's a circle, square, or something else.

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