On Thu, 24 Jun 2010 04:13:56 +0200, Benjamin M. Schwartz
<[email protected]> wrote:
The HTML5 spec appears to allow ">" inside an attribute value. For
example, the following page (note the body tag) passes the experimental
HTML5 validator at w3c.org:
<!DOCTYPE HTML><html><head><title></title></head>
<body class="3>2">
</body></html>
I think ">" should be disallowed inside attribute values. It is
disallowed in XHTML [1]. It is disallowed in HTML 4.01 [2]. Disallowing
it in HTML5 would avoid unnecessary divergence, and also sometimes
simplify parsing.
Why would it simplify parsing? It's rather nice to allow it for the
<iframe srcdoc> feature.
[1] according to the validator in XHTML 1.1 Strict mode.
'character ">" is not allowed in the value of attribute'
[2] http://www.w3.org/TR/REC-html40/charset.html#h-5.3.2
"Similarly, authors should use ">" (ASCII decimal 62) in text instead
of ">" to avoid problems with older user agents that incorrectly perceive
this as the end of a tag (tag close delimiter) when it appears in quoted
attribute values."
It is also disallowed by the HTML 4.01 Strict validator.
--
Anne van Kesteren
http://annevankesteren.nl/
