Learning Object-Oriented Programming

Encapsulating data in JavaScript

First, we will add properties to a constructor function in JavaScript. Then, we will use local variables to hide and protect specific members of a class from unauthorized access. We will use property getters and setters to control how we write and retrieve values to and from related local variables.

We will use methods to add behaviors to objects. Also, we will create the mutable and immutable version of a 3D vector to understand the difference between an object that mutates state and an object that doesn't.

Adding properties to a constructor function

As it so happens with dogs, cats also have breeds. The ScottishFold constructor function provides a blueprint for cats that belong to the Scottish Fold breed. We will ...