JavaScript Inheritance and Prototypes Quiz

Inheritance in JavaScript

• JavaScript uses prototypal inheritance for inheritance, which is a mechanism that allows objects to inherit properties and behavior from other objects.

The Prototype Object

• The prototype object is the mechanism that enables inheritance in JavaScript, allowing objects to inherit properties and behavior from other objects.
• The prototype object is used to adding new properties or methods to an object's inheritance chain.

Changing Prototype at Runtime

• Yes, the prototype of an object can be changed at runtime in JavaScript, which allows for dynamic modification of an object's inheritance chain.

Accessing Properties

• When accessing a property of an object in JavaScript, the JavaScript engine will first search the object itself, then the prototype, and so on up the prototype chain until it finds the property or reaches the end of the chain.

Private Variables

• The concept of private variables does not exist in JavaScript due to the ability to mutate the prototype chain, which allows for modification of an object's properties and behavior at runtime.