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
Become an O’Reilly member and get unlimited access to this title plus top books and audiobooks from O’Reilly and nearly 200 top publishers, thousands of courses curated by job role, 150+ live events each month,
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.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.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.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.
7.8
複数バージョンの
Backbone.js
による競合の回避
169
モデル内のデータが書き換えられることはありません。
preValidate
を使うと、モデルの属性に
対して任意の種類の検証を行えます。このメソッドには属性の名前と、検証対象の値を渡します。
//
値が不正な場合はエラーメッセージが返されます。正当な場合は、
// false
と判定される値が返されます
var errorMsg = user.preValidate('firstname', 'Greg');
7.7.5
フォーム固有の検証用クラス
この問題への最善の解決策は、属性値の検証に固執しないことかもしれません。代わりに、それ
ぞれのフォームに固有の検証機能を持った関数を用意するというやり方が考えられます。このよう
な検証のための
JavaScript
ライブラリは多数公開されており、ロジックの記述を容易にしてくれ
ます。
どうしてもモデルの中で検証を行いたいという場合は、以下のようにしてクラス内に関数を定義
できます。
User.validate = function(formElement) {
//...
};
Backbone.js
向けの 検証 用プラ グインにつ いての 詳しい情報 は、
Backbone.js
の
wiki
サイト
（
https://github.com/documentcloud/backbone/wiki/Extensions,-Plugins,-Resources#model
） に
掲載されています。
7.8
Become an O’Reilly member and get unlimited access to this title plus top books and audiobooks from O’Reilly and nearly 200 top publishers, thousands of courses curated by job role, 150+ live events each month,
and much more.
Read now
Unlock full access
More than 5,000 organizations count on O’Reilly
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.