jQuery链接与下载？ [英] jQuery Linking vs. Download?

问题描述

哪种方式更好？要链接到 http://ajax.googleapis.com 上的jQuery Pack。还是在本地下载相应的文件和链接？有关系吗？有可能链接可能会消失吗？还是有机会在线更新文件，最好链接到它？好奇。

谢谢，
Tracy

解决方案

Google代码网站：

Google直接与每个图书馆工作的
利益相关者
一起工作，并接受最新的稳定版本
，因为它们被发布。一旦我们承担给定图书馆的
版本，我们将
承诺无限期地托管该版本
。

Google托管jQuery库的要点之一是将其缓存在一个地方。请考虑以下情况：

1. 用户访问站点A


2. 站点A在同一个域上具有jQuery ，所以该文件由浏览器下载


3. 用户访问站点B


4. 站点B在同一个域上具有jQuery，因此该文件由浏览器第二次。

现在，如果我们都从Google服务器上获取了jQuery，情况就是这样的：

1. 用户访问网站A


2. 网站A从Google加载jQuery，因此可以通过浏览器下载


3. 用户访问站点B


4. 站点B从Google加载jQuery，但浏览器已经下载并缓存，因此再次提取文件是即时的。 >
   

Which way is better? To link to the jQuery Pack at http://ajax.googleapis.com. Or to download the appropriate file and link locally? Does it matter? Is there a chance the link may disappear? Or is there a chance the file online will be updated, and it's better to link to it? Curious.

Thanks, Tracy

解决方案

From the Google Code site:

Google works directly with the key stake holders for each library effort and accepts the latest stable versions as they are released. Once we host a release of a given library, we are committed to hosting that release indefinitely.

One of the main points of Google hosting the jQuery library is so that it is cached in a single place. Consider the following scenario:

1. User visits site A
2. Site A has jQuery on the same domain, so the file is downloaded by the browser
3. User visits site B
4. Site B has jQuery on the same domain, so the file is downloaded by the browser a second time.

Now if we all fetched jQuery from the Google servers, the scenario goes like this:

1. User visits site A
2. Site A loads jQuery from Google, so it's downloaded by the browser
3. User visits site B
4. Site B loads jQuery from Google, but the browser already downloaded it and cached it, so fetching the file again is instantaneous.

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