Desktop and Mobile Web App Frameworks Using JavaScript and HTML5. Learning Center. Class System - Ext JS 4.0 API Documentation. Prototype-based programming. A fruit bowl serves as one example.
A "fruit" object would represent the properties and functionality of fruit in general. A "banana" object would be cloned from the "fruit" object, and would also be extended to include general properties specific to bananas. Each individual "banana" object would be cloned from the generic "banana" object.