XHTML namespace - World Wide Web Consortium (W3C)
Sep 7, 2016 · The namespace name http://www.w3.org/1999/xhtml is intended for use in various specifications such as: Recommendations:
What does "<html xmlns="http://www.w3.org/1999/xhtml">" do?
@hey: So let me get this straight: If your first two lines are <html xmlns="http://www.w3.org/1999/xhtml"> <!DOCTYPE html> - then everything works fine. But if your first two lines are <!DOCTYPE html> …
HTML Versus XHTML - W3Schools
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.1//EN" "http://www.w3.org/TR/xhtml11/DTD/xhtml11.dtd"> <html xmlns="http://www.w3.org/1999/xhtml"> …
XHTML - Wikipedia
The namespace URI for XHTML is http://www.w3.org/1999/xhtml. The example tag below additionally features an xml:lang attribute to identify the document with a natural language:
http://www.w3.org/1999/xhtml and other HTML Namespaces
Jun 20, 2010 · We are working on converting to HTML 5. Please visit http://www.w3.org/1999/xhtml and other HTML Namespaces on the HTML 5 standard version of this site. Commonly used namespaces …
Namespace "http://www.w3.org/1999/xhtml" | XML Schema …
elements (50 global), complexTypes (45), simpleTypes (21), element groups (69), global attributes (4), attribute groups (68)
XHTML - W3docs
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd"> <html …
XHTML Reference: html
...The head, body, etc. goes here... </html> Attributes Basic xmlns This attribute is required and the value should be http://www.w3.org/1999/xhtml. Advanced version (Text) This attribute has been …
XHTML Basics :: Introduction to Web Design
There is only one value allowed for this attribute, http://www.w3.org/1999/xhtml. Despite there only being one possible option for an attribute, you are still required to have it.
XHTML ™ 1.0: The Extensible HyperText Markup Language
Nov 24, 1999 · The namespace for XHTML is defined to be http://www.w3.org/1999/xhtml. There must be a DOCTYPE declaration in the document prior to the root element. If present, the public identifier …