<html>
HTML <html> Tag
Instance
<!DOCTYPE html> <html> <head> <meta charset="utf-8"> <title>文档标题</title> </head> <body> 文档内容...... </body> </html>
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Browser support
All major browsers support< html> tag.
Tag definition and usage instructions
<html> tag tells the browser that this is an HTML document. The
<html> tag is the outermost element in an HTML document. The
<html> tag is a container for all other HTML elements (except the <!DOCTYPE> tag).
Differences between HTML 4.01 and HTML5
In HTML5, a new attribute is added: manifest.
Differences between HTML and XHTML
The xmlns attribute is required in XHTML but not in HTML.
However, even if the xmlns attribute is not used for <html> in the XHTML document, the HTML validator on the W3C will not report an error. 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 don't include it.
Attribute
New: New attribute in HTML5.
Properties | Value | Description |
---|---|---|
manifestNew | URL | Define a URL that describes the cache information of the document. |
xmlns | http://www.w3.org/1999/xhtml | HTML is not supported. Only XHTML supported. Specify the XML namespace attribute (use this attribute if you need your content to conform to XHTML.). |
Global attributes
<html> tag supports global attributes of HTML.