Mixed Bag Javascript

Abstraction in JavaScript refers to the concept of hiding the complex implementation details of a process and providing a simpler interface for interacting with it.
This is usually achieved using functions, objects, or classes.
Here's an example of abstraction in JavaScript using a class to hide the complexity of creating and manipulating shapes.

Polymorphism in JavaScript refers to the ability of different objects to respond to the same method call in a way that is appropriate to the object’s type.
This is typically achieved through inheritance and method overriding.
In JavaScript, polymorphism is commonly implemented using inheritance in classes, where a child class overrides a method of a parent class.

Let's create a scenario where we have a Shape class (parent class) and two subclasses: Circle and Rectangle.
Both subclasses will have their own implementation of the area() method, but they share a common interface, which demonstrates polymorphism.

Inheritance in JavaScript allows one class (child class) to inherit the properties and methods from another class (parent class). This helps in code reusability and the organization of related classes. In JavaScript, inheritance is typically achieved using the extends keyword.