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HTML <html> xmlns Attribute
Example
A simple XHTML document, with the minimum of required tags:
<head>
<title>Title of the document</title>
</head>
<body>
The content of the document......
</body>
</html>
Try it yourself »
Browser Support
The xmlns attribute is supported in all major browsers.
Definition and Usage
The xmlns attribute specifies the xml namespace for a document.
Note: The xmlns attribute is required in XHTML, but invalid in HTML!
However, 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.
Syntax
Attribute Values
| Value | Description |
|---|---|
| http://www.w3.org/1999/xhtml | The namespace to use (for XHTML documents) |
HTML <html> tag
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