HTML | <html> xmlns Attribute

The HTML <html> xmlns Attribute is used to specify the xml namespace for a document.

Important Note: This attribute is mainly required in XHTML, not valid in HTML 4.01, and optional in HTML 5.

Syntax:

<html xmlns="http://www.w3.org/1999/xhtml"> 

Attribute Values:

  • https://www.w3wiki.net/ It defines the namespace to use (for XHTML documents).

Example:




<!DOCTYPE html PUBLIC 
    "-//W3C//DTD XHTML 1.0 Transitional//EN" 
"http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
  
<html xmlns="http://www.geekforBeginner.org//xhtml">
<head>
    <title>Title of the document</title>
</head>
  
<body style="text-align: center;">
    <h1>w3wiki</h1>
      
    <h2>HTML xmlns Attribute</h2>
      
    The content of the document......
</body>
  
</html>


Output:

Supported Browsers: The browser supported by <HTML> xmlns attribute are listed below:

  • Apple Safari 1.0
  • Google Chrome 1.0
  • Firefox 1.0
  • Opera 1.0
  • Internet Explorer 6.0

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