The advantage of having an object delegate method lookups to its prototype is By using the prototype chain. All objects reference the same prototype methods. You only need to maintain one piece of code to affect all inherited objects. Extending the prototype causes all inherited objects to gain new methods.
A prototype is an early sample, model, or version of a product created to test a concept or process. It's a term used in many different contexts, including semantics, design, electronics, and software programming. Prototypes are commonly used by system analysts and users to evaluate new designs for improved accuracy. The purpose of prototyping is to provide specifications for a working system, not a theoretical system. In some design workflow models, prototyping (a process sometimes called materialization) is a step between formalizing and evaluating an idea.
A prototype can also mean a typical example of something, as in the derivations of "prototype". It is a term that is considered an accepted norm and helps identify objects, behaviors, and concepts that are similar to terms such as stereotypes and archetypes.
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