9. Polymorphism:
From the Inheritance code examples:
Are the greet() and myPet() examples polymorphic?
Hint: yes
Are these 'virtual'?
What about 'interfaces'?
10. This was a page of much
code
then I abstracted it
11. Reading:
The good parts - Douglas Crockford
The Definitive Guide - D Flannigan
High Performance JavaScript - N Zakas