简而言之，Backbone 中的 Collection 就是 Model 的一个有序鸠合，比方，它可能会在以下状况中用到:

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

Collection 平常只运用统一范例的 Model，然则 Model 能够属于差别范例的 Collection，比方：

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

建立一个 Collection

//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]

Backbone 的 Collection 观点比较简单，它只是 Model 的一个有序鸠合，所以对 Model 的相干操纵，一样能够对 Collection 运用，细致能够浏览 《熟悉 Backbone（一） : 什么是 Model》 一篇。

参考

http://backbonetutorials.com/what-is-a-collection/