Nested Model Example in Backbone.js

// The following is your top-level parent model in serialized JSON format:

var myModel = new Person({
  "name" : {
    "first_name" : "Andrew",
    "last_name"  : "de Andrade"
  },
  "address" : {
    "street_address_1" : "Avenida Paulista 1000",
    "street_address_2" : "Apt. 101",
    "zip_code" : "12345-0000"
  },
  "vehicle" : {
    "make" : "Toyota",
    "model" : "FJ-40 Landcruiser",
    "year" : "1966",
    "VIN" : "123456789ABCDEF"
  }
});

// Parent Model:

Person = Backbone.Model.extend({

  defaults: {
    "name"      : new Name,
    "address"   : new Address,
    "car"       : new Car
  },

  initialize: function() {
    this.set({
      "name"    : new Name(this.get('name')),
      "address" : new Address(this.get('address')),
      "car"     : new Car(this.get('car'))
    });
  }

});

// Children Models:

Name = Backbone.Model.extend({

  defaults: {
    "first_name"  : "",
    "last_name"   : "",
  },

  initialize: function() {

  }

});

Address = Backbone.Model.extend({

  defaults: {
    "street_address_1"  : "",
    "street_address_2"  : "",
    "zip_code"          : "00000-0000"
  },

  initialize: function() {

  }

});

Car = Backbone.Model.extend({

  defaults: {
    "make"  : "",
    "model" : "",
    "year"  : null
    "VIN"   : null
  },

  initialize: function() {

  }

});