Describe the biggest difference between .forEach & .map.

.map returns an array while .forEeach does not

What is the difference between a function and a method?

a method is a function that lives in an object whereas a function stands alone

What is closure?

a function that has access to the properties outside of its inner immediatel y local scope

Describe the four rules of the 'this' keyword.

window/global binding, implicit binding, explicit binding, new binding

Why do we need super() in an extended class?

to have access to the properties of the parent class