Backbone.jsのサンプルの一つに上がってるtodos.jsを読んでみると、どうもbackbone-localstorage.jsを使えばかなり簡単にデータを保存できるらしい。 backbone-localstorage.jsとは A simple module to replace Backbone.sync with localStorage-based persistence. Models are given GUIDS, and saved into a JSON object. Simple as that. backbone-localstorage.js window.TodoList = Backbone.Collection.extend({ model: Todo, localStorage: new Store("todos"), // これ // ... }