javascript prototype example

var proto = {
  sentence  : 4,
	probation : 2
}

var makePrisoner = function(name,id) {
	var prisoner = Object.create(proto);
	prisoner.name = name;
	prisoner.id = id;
	return prisoner;
}

var firstPrisoner = makePrisoner('Joe','12A');
var secondPrisoner = makePrisoner('Sam','2BC');

console.log('firstPrisoner: ',firstPrisoner);
console.log('secondPrisoner: ',secondPrisoner);