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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22
2
章
MVC
いるかもしれません。もし興味があるなら、拙著Learning JavaScript Design Patterns（邦題
『
JavaScript
デザインパターン』オライリー・ジャパン）でこれらのパターンをいくつか紹介してい
るので参考にするとよいでしょう。
繰り返しますが、モデルはアプリケーションのデータを表し、ビューはユーザーに対する画面表
示を受け持ちます。そのため、両者間のコミュニケーションにはパブリッシュ
-
サブスクライブの
仕組みが必要になります（このことは
MVC
の解説記事でも取り上げられていないことが多いので
す）。変更が発生すると、モデルは他のコンポーネントに対して変更をパブリッシュ（通知）します。
モデルに対してサブスクライブすなわち購読しているコンポーネント（一般的にはコントローラ）
は、変更内容に応じてビューを更新します。このような両者間の関係（ビューアーとも呼ばれます）
によって、複数のビューを同じモデルに関連付けることが可能になります。
MVC
が持つ疎結合の性質（実装ごとに異なりますが）についてより深く知りたい読者には、
MVC
の目標の
1
つはトピックとオブザーバーとの間で
1
対多の関係を定義できるようにすること
であると指摘したいと思います。トピックが変化すると、すべてのオブザーバーが更新されます。
ただし、ビューとコントローラの関係はこれとは若干異なります。コントローラはビューによる
ユーザーの操作への応答を促進するという役割を持ち、これは
Strategy
パターンに相当します。 ...
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O’Reilly covers everything we've got, with content to help us build a world-class technology community, upgrade the capabilities and competencies of our teams, and improve overall team performance as well as their engagement.Julian F.
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.
I’ve been on the O’Reilly platform for more than eight years. I use a couple of learning platforms, but I'm on O'Reilly more than anybody else. When you're there, you start learning. I'm never disappointed.Amir M.
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.