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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第十章
Google 的網站上列出所有目前有提供 CDN 服務的函式庫（
http://code.google.com/apis/
libraries/devguide.html
）。假設你現在想要在自己的網頁上套用 jQuery 函式庫（
http://
code.google.com/apis/libraries/devguide.html#jquery
），你可以利用Google 所提供的
JavaScript 載入函式庫，或是用最簡單、最單純的 script 標籤也行：
<!-- 精簡版的 jQuery 函式庫 -->
<script src="//ajax.googleapis.com/ajax/libs/jquery/1.4.4/jquery.min.js"></script>
<!-- 精簡版的 jQuery UI 函式庫 -->
<script src="//ajax.googleapis.com/ajax/libs/jqueryui/1.8.6/jquery-ui.min.js">
</script>
不知你是否有注意到，上面這段範例程式裡的網址，都沒有指定通訊協定，只有指定
「
//
」而已。這個鮮為人知的小技巧，可以讓 script 檔案直接套用和目前所在網頁相同
的通訊協定。也就是說，如果使用者是透過較安全的 HTTPS 協定載入網頁，網頁在載
入 script 檔案時也會自動用相同的 HTTPS 通訊協定，不會跳出任何安全性警告訊息。
沒有設定 scheme 的相對路徑 URL ...
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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.