February 2014
Intermediate to advanced
372 pages
7h
Japanese
Content preview from Backbone.jsアプリケーション開発ガイド
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80
4
章 チュートリアル
1
−
Todo
リスト（初めての
Backbone.js
アプリケーション）
4.3
Todo
コレクション
続いて、モデルをグループ化するための
TodoList
というコレクションを定義します。このコレ
クションは
Backbone localStorage adapter
を使い、デフォルトの
sync()
メソッドを置き換えて
います。これによって、
Todo
項目が
localStorage
（
HTML5
で定義されました）に永続化されるよ
うになります。
localStorage
に保存されたデータはページ間をまたがって利用できます。
// js/collections/todos.js
var app = app || {};
// Todo
コレクション
// ---------------
//
バックエンドとして、リモートのサーバではなく
localStorage
を
//
利用します
var TodoList = Backbone.Collection.extend({
//
このコレクションに含まれるモデル
model: app.Todo,
//
すべての
Todo
項目は
todos-backbone
という名前空間に保存されます。
//
この仕組みが機能するためには、ページ内に
Backbone localStorage
// adapter
が読み込まれている必要があります。読み込まれていない
//
状態でテストを行いたい場合は、エラーの発生を避けるために次の行を
//
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I wanted to learn C and C++, but it didn't click for me until I picked up an O'Reilly book. When I went on the O’Reilly platform, I was astonished to find all the books there, plus live events and sandboxes so you could play around with the technology.Addison B.
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I'm always learning. So when I got on to O'Reilly, I was like a kid in a candy store. There are playlists. There are answers. There's on-demand training. It's worth its weight in gold, in terms of what it allows me to do.