Javascript object inheritance
var person = {
    'first-name': 'FirstName',
    'last-name': 'LastName',
    'gender': 'Male'
};

var anotherPerson = new Object(person);
anotherPerson.desig = 'Designation';

console.log('Another person designation: ' + anotherPerson['desig'] + ', person designation: ' + person['desig']);

person.place = 'XYZ';
console.log(person['place'] + ', ' + anotherPerson['place']); // Expected: XYZ, undefined. Result: XYZ, XYZ.

person = undefined;
console.log(anotherPerson['place']) //Expected: error, Result: XYZ. ??!?!?
console.log(person['place']) // Expected: error, Result: error.

var Person = function () {
    this["first-name"] = 'FirstName',
    this["last-name"] = 'LastName',
    this["gender"] = 'Male'
};

var person = new Person();
var anotherPerson = new Person();

var Person = function () {
    this["first-name"] = 'FirstName',
    this["last-name"] = 'LastName',
    this["gender"] = 'Male'
};

var AnotherPerson = function () {
    this.desig = "Designation";
}
AnotherPerson.prototype = new Person();   // inherit from Person
AnotherPerson.prototype.constructor = AnotherPerson;  // reset constructor

var person = new Person();
var anotherPerson = new AnotherPerson();

console.log(person.desig); // undefined
console.log(anotherPerson.desig); // Designation

var person = {
    'first-name': 'FirstName',
    'last-name': 'LastName',
    'gender': 'Male'
};
if (typeof Object.create !== 'function')
{
    Object.create=function(o)
    {
        function F(){}
        F.prototype=o;
        return new F();
    }
}
var newPerson=Object.create(person);
newPerson.age=25;
newPerson.gender="Female";

console.log(person.gender); // Male
console.log(newPerson.gender); // Female

console.log(person.age); // undefined
console.log(newPerson.age); // 25

var anotherPerson = new Object();
for(i in person) anotherPerson[i]=person[i];

var anotherPerson = new Object(person);