Classes and Inheritance

Question 1

In JavaScript classes are _____

Answer 1

Functions!

Question 2

What is the foundation of every class?

Answer 2

The constructor function

Question 3

To create a sub-class what keyword do we need?

Answer 3

Extends

ex. class Child extends Parent {
}

Question 4

Methods declared inside an object are not properties of the object, but properties of the object’s _____

Answer 4

Prototype

Question 5

What does super( ) do?

Answer 5

Super( ) tells a base’s constructor to be concerned with the sub-class’ attributes - and it allows us to get away from the confusing object.create(this, class) syntax.