Building a chain of prototypes by extending constructor functions in javaScript.
Articles: http://techsith.com/home/object-oriented-programming-javascript/
Code Samples:
https://jsfiddle.net/0bqxszsh/5/
https://jsfiddle.net/jspatel/0bqxszsh/6/
https://jsfiddle.net/jspatel/0bqxszsh/4/