Describe the difference between .forEach() and .map()

• .map() returns a new array with the modified items while .forEach() doesn't.

What is the difference between a function and a method?

• Functions are defined outside of clases while methods are defined inside of a class or as part of it.

What is closure?

Describe the four rules of the .this() keyword?

• Window/Global Binding: Binds to the most global window.

• Implicit Binding: Binds the object that is left to the dot of the function called.

• New Binding: Links a new object that is left to the dot of the function called.

• Explicit Binding: 'this' is assigned via .call(), .apply() and .bind()

Why do we need super() in an extended class

• Passes new attributes back to the constructor of the parent object.