Untitled

var person = Object.make(null, {
  get name() {
    return this.first_name + " " + this.last_name;
  },
  set name() {
    ...
  },
  greet: function (person) {
    return this.name + ': Why, hello there, ' + person + '.'
  }
})

// Then we can share those behaviours with Mikhail
// By creating a new object that has it's [[Prototype]] property
// pointing to `person'.
var mikhail = Object.make(person, {
  first_name: 'Mikhail',
  last_name: 'Weiß',
  age: 19,
  gender: 'Male'
})

// And we can test whether things are actually working.
// First, `name' should be looked on `person'
mikhail.name
// => 'Mikhail Weiß'

// Setting `name' should trigger the setter
mikhail.name = 'Michael White'

// Such that `first_name' and `last_name' now reflect the
// previously name setting.
mikhail.first_name
// => 'Michael'
mikhail.last_name
// => 'White'

// `greet' is also inherited from `person'.
mikhail.greet('you')
// => 'Michael White: Why, hello there, you.'

// And just to be sure, we can check which properties actually
// belong to `mikhail'
Object.keys(mikhail)
// => [ 'first_name', 'last_name', 'age', 'gender' ]