Facebook namespace problem causing invalid code
I have seen various articles on this site and on google about how to make facebook code valid, but none of the solutions seem to work for me. I think the problem lies in my doc type decleration:
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
<html xmlns="http://www.w3.org开发者_运维百科/1999/xhtml" xml:lang="en" lang="en" xmlns:fb="http://www.facebook.com/2008/fbml" xmlns:og="http://opengraphprotocol.org/schema/" >
...
<meta property="og:site_name" content="my site name" />
<meta property="og:title" content="Buy...
Can anyone point me in the right direction please?
John
I'm having a similar problem.
<?xml version="1.0" encoding="UTF-8"?>
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML+RDFa 1.0//EN" "http://www.w3.org/MarkUp/DTD/xhtml-rdfa-1.dtd">
<html xmlns="http://www.w3.org/1999/xhtml" xmlns:og="http://ogp.me/ns#" xml:lang="nl-NL">
...
<meta property="og:type" content="book" />
That's how almost all examples are like, and strangely it validates on w3c's validator, however all other validators including CSE Html validator and http://check.rdfa.info need a og prefix in front of the meta tag:
<og:meta property="og:type" content="book" />
That validates in almost anything except the official w3c validator. Not sure if facebook will parse it either. Why they chose not to use "name" is a big mystery for me. What a fine mess!
加载中,请稍侯......
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