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Backbone.jsアプリケーション開発ガイド
book

Backbone.jsアプリケーション開発ガイド

by Addy Osmani, 牧野 聡
February 2014
Intermediate to advanced
372 pages
7h
Japanese
O'Reilly Japan, Inc.
Content preview from Backbone.jsアプリケーション開発ガイド
3.5
REST
に基づく永続化
55
{ name: '
ロブ
', age: 55 }
]);
var filteredNames = collection.chain()
//
連鎖を開始します。コレクション内のモデルをラップした
//
オブジェクトが返されます
.filter(function(item) { return item.get('age') > 10; })
//
ティムを除く配列をラップしたものが返されます
.map(function(item) { return item.get('name'); })
//
名前だけを含む配列をラップしたものが返されます
.value(); //
連鎖を終了し、最終的な配列を受け取ります
console.log(filteredNames);
//
ログには「
['
アイダ
', '
ロブ
']
」と記録されます
Backbone.js
に固有のメソッドの中にも、
this
を返すため連鎖可能なものもあります。
var collection = new Backbone.Collection();
collection
.add({ name: '
ジョン
', age: 23 })
.add({ name: '
ハリー
', age: 33 })
.add({ name: '
スティーブ
', age: 41 });
var names = collection.pluck('name');
console.log(names);
//
ログには ...
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Publisher Resources

ISBN: 9784873116587Other