JavaScript : Object-Oriented Programming

Exercises

1. Implement multiple inheritance but with a prototypal inheritance pattern, not property copying. For example:

   var my = objectMulti(obj, another_obj, a_third, {
   additional: "properties"
   });

   The property additional should be an own property, all the rest should be mixed into the prototype.

2. Use the canvas example to practice. Try out different things, for example:
   • Draw a few triangles, squares, and rectangles.
   • Add constructors for more shapes, such as Trapezoid, Rhombus, Kite, and Pentagon. If you want to learn more about the canvas tag, create a Circle constructor too. It will need to overwrite the draw() method of the parent.
   • Can you think of another way to approach the problem and use another type of inheritance?
   • Pick one of the methods that ...