Javascript : Create simple object

script.js

// first method

function MyClass() {
	this.name = "test class";
}

var s = new MyClass();
s.name = "some";

// another one method (old-style)

var person = new Object();

person.firstName = "John";
person.lastName = "Doe";

person.sayHi = function() {
  return "Hi there";
}

// and another one method (the best)

var person = {
  firstName : "John",
  lastName : "Doe",
  sayHi : function() {
    return "Hi there";
  }
};