I'm personally of the opinion that prototype-based systems are superior to class-based systems in exactly the same way that gotos are superior to for loops. Ad

I'm personally of the opinion that prototype-based systems are superior to class-based systems in exactly the same way that gotos are superior to for loops. Add to this the fact that JavaScript's prototype system isn't actually very flexible, and you're almost always better off to roll a class-based system on top of it.