HTML html xmlns Attribute
 HTML <html> tag
Definition and Usage
The xmlns attribute specifies the xml namespace for the document.
The xmlns attribute is required in XHTML but not in HTML.
However, the validator on w3.org does not complain when this attribute is missing from the
<html> tag in an XHTML document. This is because "xmlns=http://www.w3.org/1999/xhtml"
is a fixed value and will be added to the <html> tag even if you do not include
it.
Syntax
<html xmlns="http://www.w3.org/1999/xhtml">
|
Support
W3C: The "W3C" column indicates whether or not the
attribute is defined in the W3C HTML/XHTML recommendation.
| Internet Explorer |
Firefox |
Opera |
Safari |
W3C |
| YES |
YES |
YES |
YES |
XHTML only |
Example
<html xmlns="http://www.w3.org/1999/xhtml">
</html>
|
Try-It-Yourself Demos
xmlns example
How set the xmlns attribute.
HTML <html> tag
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