是否可以验证xmlns：fb（Facebook）属性？ [英] Is it possible to validate the xmlns:fb (Facebook) attribute?
问题描述
我在我的网站上有一个Facebook Like按钮，因此也有 xmlns：fb 属性在< html> 标签：
I have a Facebook Like button on my site and as such also have the xmlns:fb attribute on the <html> tag:
<!DOCTYPE html>
<html lang="en" xmlns:fb="http://www.facebook.com/2008/fbml">
但是，当通过W3C验证器运行我的网站时，我收到以下错误：
However, when running my site through the W3C validator, I get these errors:
第2行第61列：属性xmlns：这里不允许fb。
Line 2, Column 61: Attribute xmlns:fb not allowed here.
第2行，列61：属性与本地名称xmlns：fb不可序列化为XML 1.0。
Line 2, Column 61: Attribute with the local name xmlns:fb is not serializable as XML 1.0.
行222，列72：属性fb：like：layout不可序列化为XML 1.0 。
Line 222, Column 72: Attribute fb:like:layout is not serializable as XML 1.0.
行222，列72：属性fb：like：此时不允许元素a上的布局。
Line 222, Column 72: Attribute fb:like:layout not allowed on element a at this point.
我的理解是，使用 xmlns：fb 属性将 fb 添加到文档命名空间，因此使用任何< fb：元素是有效的。那不是吗？这是HTML5问题吗？
It is my understanding that using the xmlns:fb attribute adds fb to the document namespace, so that using any <fb: element is valid. Is that not the case? Is it a HTML5 issue?
我也有与Twitter按钮类似的验证错误，是否可以修复这些？
I also have similar validation errors with the Twitter button, is it possible to fix those as well?
第223行，第53列：属性tw：via不可序列化为XML 1.0。
Line 223, Column 53: Attribute tw:via is not serializable as XML 1.0.
第223行第53列：属性tw：此时不允许在元素a上。
Line 223, Column 53: Attribute tw:via not allowed on element a at this point.
推荐答案
没有使用HTML5验证 xmlns：fb 的方法。
There is no way to validate xmlns:fb with HTML5.
但是，您可以使用新的 data -... -attributes，由Facebook添加并且是有效的HTML5，如此处所述
However, you can use the new data-...-attributes, which were added by Facebook and are valid HTML5, as described here.
这是一个如何在HTML5中使用此扩展的示例（假设所有代码都在body元素中）：
This is an example of how you can use this extension in HTML5 (assume all code is in the body element):
<h3>Members</h3>
<embed data-fb="login-button" data-show-faces="true" />
<h3>Recent activity</h3>
<embed data-fb="activity" data-site="***" data-width="200" data-header="false"
data-border_color="#fff" data-recommendations="false" />
<div id="fb-root"></div>
<!-- the JavaScript API -->
<script src="http://connect.facebook.net/en_US/all.js"></script>
<!-- the extention script from this article -->
<script src="/scripts/fb.js"></script>
<script>
//<![CDATA[
FB.init({apiKey: '***', appId: '***', status: true, cookie: true, fbml5: true});
//]]>
</script>
这将是等效的XHTML代码：
This would be the equivalent XHTML code:
<h3>Members</h3>
<fb:login-button show-faces="true" />
<h3>Recent activity</h3>
<fb:activity site="***" width="200" header="false"
border_color="#fff" recommendations="false" />
<div id="fb-root"></div>
<!-- the JavaScript API -->
<script src="http://connect.facebook.net/en_US/all.js"></script>
<!-- the extention script from this article -->
<script src="/scripts/fb.js"></script>
<script>
//<![CDATA[
FB.init({apiKey: '***', appId: '***', status: true, cookie: true, fbml5: true});
//]]>
</script>
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