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.
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:
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>
This is how i am doing it. Wrap around all fbml tags inside and then use js to simply uncomment the fbml code using javascript. Heres an example:
Markup:
<P class="fbreplace" style="display: none;">
<!-- FBML
<fb:like layout="standard" show_faces="false" colorscheme="light"></ fb: like>
->
</ p>
JS (JQuery Required):
$(document).ready(function() {
$(".fbreplace").html.replace(/<!-- FBML /g, "");
$(".fbreplace").html.replace(/ -->/g, "");
$(".fbreplace").style.display = "block";
});