Asqatasun v4 - RGAA 3.0 - Rule 8.1.2
We check the doctype validity regarding the W3C recommandations (W3C Recommended list of Doctype declarations)
For each Web page is the document type (doctype tag) valid?
<!doctype> tag of the page
We check the validity of the doctype of the page regarding the "RecommendedDoctypeDeclarations" and "RecommendedCaseInsensitiveDoctypeDeclarations" whitelists
- Used nomenclatures : "RecommendedDoctypeDeclarations", "RecommendedCaseInsensitiveDoctypeDeclarations"
- Reference : All the doctypes declarations recommanded in http://www.w3.org/QA/2002/04/valid-dtd-list.html
MessageA : Wrong Doctype Declaration
- code : WrongDoctypeDeclaration
- status: Failed
- parameter : none
- present in source : no
The page has no doctype (Set1)
The doctype is not found among the doctype whitelist
The doctype is found among the doctype whitelist
HTML5 doctype is NOT case-sensitive: http://www.w3.org/TR/html5/syntax.html#the-doctype
HTML4: could not find formal statement about case-sensitiveness of doctype: http://www.w3.org/TR/html4/intro/sgmltut.html
XHTML1: same as HTML4 http://www.w3.org/TR/xhtml1/
From version 2.0, Asqatasun works on the generated html rendered by Firefox. We've noticed that for HTML 4.01 doctypes that define the doctype with the "HTML" key in Uppercase, the doctype is transformed and the "HTML" key is changed to lowercase. This behaviour is the same with chromium and opera. Regarding this fact, we decided to consider all the doctypes as case insensitive despite the W3c recommandations.