JavaScript: Create Advanced Web Applications With Object-Oriented Techniques

I just started working with OOP in javascript and found this article very informative. The section on prototypes was very helpful as I have been digging around in the YUI library lately and found that area confusing. JavaScript: Create Advanced Web Applications With Object-Oriented Techniques The article has lots of examples if you click on the figure links. Here was a useful one on Inheriting from a Prototype: Inheriting from a Prototypefunction GreatDane() { } var rover = new GreatDane(); var spot = new GreatDane(); GreatDane.prototype.getBreed = function() { return “Great Dane”; };// Works, even though at this point // rover and spot are already created. alert(rover.getBreed()); // this hides getBreed() in GreatDane.prototype spot.getBreed = function() { return “Little Great Dane”; }; alert(spot.getBreed()); // but of course, the change to getBreed // doesn’t propagate back to GreatDane.prototype // and other objects inheriting from it, // it only happens in the spot object alert(rover.getBreed());