A simple XHTML document, with the minimum of required tags:
The xmlns attribute specifies the xml namespace for a document.
Note: The xmlns attribute is required in XHTML, invalid in HTML 4.01, and optional in HTML5.
Note: The HTML validator at http://w3.org does not complain when the xmlns attribute is missing in an XHTML document. This is because the namespace "xmlns=http://www.w3.org/1999/xhtml" is default, and will be added to the <html> tag even if you do not include it.
Attribute | |||||
---|---|---|---|---|---|
xlmns | Yes | Yes | Yes | Yes | Yes |
Value | Description |
---|---|
http://www.w3.org/1999/xhtml | The namespace to use (for XHTML documents) |