我最近开始在 Facebook 应用程序上工作，但我迷失了方向，并试图得到任何直接的答案。用谷歌搜索答案似乎不太适合 facebook，因为事情变化太快，博客很少更新它以反映新的 API。
我知道 Facebook 会弃用 FBML，对此我感到非常高兴。所以我的问题是，DOCTYPE facebook 会给你放在你的网站上，被弃用吗？
这样做有什么用？
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Assuming you are talking about this:
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Strict//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-strict.dtd">
<html xmlns="http://www.w3.org/1999/xhtml" xmlns:fb="http://www.facebook.com/2008/fbml">
(specifically the xmlns:fb="http://www.facebook.com/2008/fbml"). They are not deprecating that. You should continue to add xmlns:fb="http://www.facebook.com/2008/fbml" in your <html> tag. However, for modernity you should be using the HTML5 doctype, so your doctype and HTML tag should look like this:
<!DOCTYPE html>
<html xmlns="http://www.w3.org/1999/xhtml" xmlns:fb="http://www.facebook.com/2008/fbml">
What the xmlns:fb part does is specifies the XML namespace for tags within the page which begin with the fb: prefix (such as <fb:name/>).
于 2011-03-02T19:48:39.117 回答