prototyping chaining, <br> object extension for all the <br> modern programmers

`javascript var Ninja = function () {};

Ninja.prototype.throw = function (item) {     console.log('Throwing ' + item); };

var Shinobi = function () {}; Shinobi.prototype =  Object.create(Ninja.prototype);

var shinobi = new Shinobi; shinobi.throw('knife'); // Throwing knife `