HTML & XHTML
HTML 5
in progress
← XHTML 1.1
1st released: 31-May-2001 2nd released: 23-Nov-2010
XHTML 1.1 =
HTML seen as modularXML
← XHTML 1.0
released: 26-Jan-2000
Strict
Transitional
Frameset
XHTML 1.0 = XMLRules + HTML
XMLRules in HTML:
tags
must be:
- ended;
- closed (empty ones);
- properly nested;
- lowercase;
attributes
must be:
- lowercase;
- should NOT
be minimized; - lang attribute followed by xml:lang att.;
values
must be:
- lowercase;
- quoted;