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I am using the W3C XHTML validator to check my sites and I am getting some errors on pages with FBML. Most of the cause of such errors is the "&" character. Since FBML values and attributes are generated on the fly, I have no way to encode the character properly before displaying it.
Question: Is there a way for me to tell Facebook Connect to render the mark up properly?
Thanks.
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Try to put the facebook code in CDATA:
<script type="text/javascript">
/* <![CDATA[ */
document.write('<fb:login-button length="long" size="large" show-faces="true" perms="" onlogin="window.location=\'<?=current_url()?>\'"></fb:login-button>');
/* ]]> */
</script>
In short, not as far as I know. To make matters worse, the fb:* tags don't validate either, even if you make your html tag look like this:
<html xmlns="http://www.w3.org/1999/xhtml" xmlns:fb="http://www.facebook.com/2008/fbml" xml:lang="en" lang="en">
If this is a huge issue for you, you might be able to get away with putting non-XHTML-compliant markup in its own HTML-4.01-strict iframe, to basically sweep the crap under the rug.
This might be helpful:
http://wiki.developers.facebook.com/index.php/Facebook_Platform_for_Mobile:_XHTML
Some german guy also worked on it:
http://translate.google.com/translate?js=y&prev=_t&hl=en&ie=UTF-8&layout=1&eotf=1&u=http%3A%2F%2Fwww.ka-mediendesign.de%2Fblog%2Ffbml-in-xhtml-neue-version%2F&sl=de&tl=en
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