January 2013
Intermediate to advanced
332 pages
5h 23m
Chinese
Content preview from JAVASCRIPT網頁應用程式設計
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Spine 函式庫
|
183
儲存資料
Spine 都是將資料儲存在記憶體中，不過其實也能利用 HTML5 的本地儲存區（Local
Storage），或利用 Ajax 將資料存回後端。
使用本地儲存區的做法並不難，只要在網頁裡引用 JavaScript 檔案
spine.model.local.js
，
然後利用
extend()
函式將
Spine.Model.Local
加進模型裡即可：
// 利用本地儲存區儲存工作項目
Task.extend(Spine.Model.Local);
Task.fetch();
儲存在瀏覽器本地儲存區裡的資料，不會自動被寫進模型裡。要等到有人呼叫
fetch()
函式後，本地儲存區裡的資料才會被裝進模型裡。通常我們會在應用程式其他部分都已
經初始化完成後，再做這個動作。資料一旦全數裝進模型裡，就會觸發
refresh
事件：
Task.bind("refresh", function(){
// 新的工作項目！
renderTemplate(Task.all());
});
如果想要利用 Ajax 儲存資料，做法也很類似；先在網頁裡引用 JavaScript 檔案
spine.
model.ajax.js
，然後利用
extend()
函式將
Spine.Model.Ajax
加進模型裡：
// 存到伺服器端
Task.extend(Spine.Model.Ajax);
Spine 預設會自動產生一組 URL（直接拿模型的名稱加上複數型態 s）。拿前面這段程
式碼來說，由 Spine 幫
Task ...
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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.