HTML: Difference of DTD

Document directory

• Strict)
• Transitional (Transition type)
• Frameset (framework type)
• XHTML 1.0 strict
• XHTML 1.0 transitional
• XHTML 1.0 frameset
• HTML strict DTD
• HTML Transitional DTD
• Frameset DTD

XHTML document type:

• Strict)
• Transitional (Transition type)
• Frameset (framework type)

XHTML 1.0 strict

<! Doctype HTML <br/> Public "-// W3C // dtd xhtml 1.0 strict // en" <br/> "http://www.w3.org/TR/xhtml1/DTD/xhtml1-strict.dtd">

In this case, a clean mark is required to avoid confusion. Use it with the stacked style sheet.

 

XHTML 1.0 transitional

<! Doctype HTML <br/> Public "-// W3C // dtd xhtml 1.0 transitional // en" <br/> "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">

In this case: When you need to use HTML's performance features, and you need to write XHTML for browsers that do not support stacked style sheets.

 

XHTML 1.0 frameset

<! Doctype HTML <br/> Public "-// W3C // dtd xhtml 1.0 frameset // en" <br/> "http://www.w3.org/TR/xhtml1/DTD/xhtml1-frameset.dtd">

In this case, you need to use the HTML framework to split the browser window into two or more frames.

 

 

Html

HTML 4.01 specifies three types of documents: strict, transitional, and frameset.

HTML strict DTD

Use this type if you need a clean flag to avoid confusion on the presentation layer. Please use it with the stacked style sheet (CSS:

<! Doctype HTML public "-// W3C // dtd html 4.01 // en" "<br/> http://www.w3.org/TR/html4/strict.dtd">

HTML Transitional DTD

Transitional DTD can contain the rendering attributes and elements that W3C expects to move into the style sheet. If you use a browser that does not support Cascading Style Sheets (CSS), you must use the HTML Rendering feature:

<! Doctype HTML public "-// W3C // dtd html 4.01 transitional // en" "<br/> http://www.w3.org/TR/html4/loose.dtd">

Frameset DTD

Frameset DTD should be used for documents with frameworks. Except that the frameset element replaces the body element, the frameset DTD is equivalent to the transitional DTD:

<! Doctype HTML public "-// W3C // dtd html 4.01 frameset // en" "<br/> http://www.w3.org/TR/html4/frameset.dtd">