Person = Backbone.Model.extend({
  initialize: function(){
    alert("Welcome to Backbone!");
  }
});

var person = new Person;

Person = Backbone.Model.extend({
  initialize: function(){
    alert("Welcome to Backbone!");
  }
});

//在实例化 Model 时直接设置
var person = new Person({ name: "StephenLee", age: 22 });

//我们也可以在 Model 实例化后，通过 set() 方法进行设置
var person = new Person();
person.set({ name: "StephenLee", age: 22});

Person = Backbone.Model.extend({
  initialize: function(){
    alert("Welcome to Backbone!");
  }
});

var person = new Person({ name: "StephenLee", age: 22});

var age = person.get("age"); // 22
var name = person.get("name"); // "StephenLee"

Person = Backbone.Model.extend({
  defaults: {
    name: "LebronJames",
    age: 30,
  },
  initialize: function(){
    alert("Welcome to Backbone!");
  }
});

var person = new Person({ name: "StephenLee"});

var age = person.get("age"); // 因为实例化时未指定 age 值，则为默认值 30
var name = person.get("name"); //实例化制定了 name 值，则为 "StephenLee"

Person = Backbone.Model.extend({
  defaults: {
    name: "LebronJames",
    age: 30,
    hobby: "basketball"
  },
  initialize: function(){
    alert("Welcome to Backbone!");
  },
  like: function( hobbyName ){
    this.set({ hobby: hobbyName });
  },
});

var person = new Person({ name: "StephenLee", age: 22});

person.like("coding");// 设置 StephenLee's hobby 为 coding
var hobby = person.get("hobby"); // "coding"

Person = Backbone.Model.extend({
  defaults: {
    name: "LebronJames",
    age: 30,
  },
  initialize: function(){
    alert("Welcome to Backbone!");
    this.on("change:name", function(model){
      var name = model.get("name"); // 'KobeBryant'
      alert("Changed my name to " + name );
    });
  }
});

var person = new Person();

var age = person.set({name : "KobeBryant"});

var UserModel = Backbone.Model.extend({
  urlRoot: '/user',
  defaults: {
    name: '',
    email: ''
  }
});

var UserModel = Backbone.Model.extend({
  urlRoot: '/user',
  defaults: {
    name: '',
    email: ''
  }
});

var user = new Usermodel();
//注意，我们并没有在此定义 id 属性
var userDetails = {
  name: 'StephenLee',
  email: 'stephen.lee@mencoplatform.com'
};

//因为 model 没有 id 属性，所以此时使用 save() 方法，Backbone 会向服务器端发送一个 POST 请求，服务器端收到数据后，将其存储，并返回包含 id 的信息给 Model
user.save(userDetails, {
  success: function (user) {
    alert(user.toJSON());
  }
})

var user = new Usermodel({id: 1});//初始化时指定 id 的值

//利用 fetch() 方法将会向 user/1 请求数据，服务器端将会返回完整的 user 记录，包含 name,email 等信息
user.fetch({
  success: function (user) {
    alert(user.toJSON());
  }
})

var user = new Usermodel({
  id: 1,
  name: 'StephenLee',
  email: 'stephen.lee@mencoplatform.com'
});//实例化时指定 id 值

//因为指定了 id 值，此时使用 save() 方法，Backbone 将会向 user/1 发送 PUT 请求，将会对数据库中 id 为1的记录的 email 修改
user.save({email: 'newemail@qq.com'}, {
  success: function (model) {
    alert(user.toJSON());
  }
});

var user = new Usermodel({
  id: 1,
  name: 'StephenLee',
  email: 'stephen.lee@mencoplatform.com'
});//实例化时指定 id 值

//因为指定了 id 值，此时使用 destroy() 方法，Backbone 将会向 user/1 发送 DELETE 请求，服务器端接收请求后，将会在数据库中删除 id 为 1的数据
user.destroy({
  success: function () {
    alert('Destroyed');
  }
});

Model: Student, Collection: ClassStudents
Model: Todo Item, Collection: Todo List
Model: Animal, Collection: Zoo

Model: Student, Collection: Gym Class
Model: Student, Collection: Art Class
Model: Student, Collection: English Class

//定义 Model Song
var Song = Backbone.Model.extend({
  defaults: {
    name: "Not specified",
    artist: "Not specified"
  },
  initialize: function(){
    console.log("Music is the answer");
  }
});

//定义 Collection Album
var Album = Backbone.Collection.extend({
  model: Song //指定 Collection 内的 Model 为 Song
});

var song1 = new Song({ name: "How Bizarre", artist: "OMC" });
var song2 = new Song({ name: "Sexual Healing", artist: "Marvin Gaye" });
var song3 = new Song({ name: "Talk It Over In Bed", artist: "OMC" });

var myAlbum = new Album([ song1, song2, song3]);
console.log( myAlbum.models ); // 输出为 [song1, song2, song3]