Home --- Topics --- Articles --- Offers --- Register --- Contact us

Did you know?

if you register at Hamid School you can save up to 45% on hosting packages offered by Surreyhost.com .

Don't miss out, every minute counts!

Are you Confused? Click here to learn how to use hamid school

XHTML DTD

The XHTML standard defines three Document Type Definitions.

The most common is the XHTML Transitional.

<!DOCTYPE> Is Mandatory

An XHTML document consists of three main parts:

the DOCTYPE
the Head
the Body

The basic document structure is:

<!DOCTYPE ...>
<html>
<head>
<title>... </title>
</head>
<body> ... </body>
</html>

The DOCTYPE declaration should always be the first line in an XHTML document.

An XHTML Example

This is a simple (minimal) XHTML document:

<!DOCTYPE html
PUBLIC "-//W3C//DTD XHTML 1.0 Strict//EN"
"http://www.w3.org/TR/xhtml1/DTD/xhtml1-strict.dtd">
<html>
<head>
<title>simple document</title>
</head>
<body>
<p>a simple paragraph</p>
</body>
</html>

The DOCTYPE declaration defines the document type:

<!DOCTYPE html
PUBLIC "-//W3C//DTD XHTML 1.0 Strict//EN"
"http://www.w3.org/TR/xhtml1/DTD/xhtml1-strict.dtd">

The rest of the document looks like HTML:

<html>
<head>
<title>simple document</title>
</head>
<body>
<p>a simple paragraph</p>
</body>
</html>

The 3 Document Type Definitions

DTD specifies the syntax of a web page in SGML.
DTD is used by SGML applications, such as HTML, to specify rules that apply to the markup of documents of a particular type, including a set of element and entity declarations.
XHTML is specified in an SGML document type definition or 'DTD'.
An XHTML DTD describes in precise, computer-readable language, the allowed syntax and grammar of XHTML markup.

There are currently 3 XHTML document types:

STRICT
TRANSITIONAL
FRAMESET

XHTML 1.0 specifies three XML document types that correspond to three DTDs: Strict, Transitional, and Frameset.

XHTML 1.0 Strict

<!DOCTYPE html
PUBLIC "-//W3C//DTD XHTML 1.0 Strict//EN" 
"http://www.w3.org/TR/xhtml1/DTD/xhtml1-strict.dtd">

Use this when you want really clean markup, free of presentational clutter. Use this together with Cascading Style Sheets.

XHTML 1.0 Transitional

<!DOCTYPE html
PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN"
"http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">

Use this when you need to take advantage of HTML's presentational features and when you want to support browsers that don't understand Cascading Style Sheets.

XHTML 1.0 Frameset

<!DOCTYPE html
PUBLIC "-//W3C//DTD XHTML 1.0 Frameset//EN"
"http://www.w3.org/TR/xhtml1/DTD/xhtml1-frameset.dtd">

Use this when you want to use HTML Frames to partition the browser window into two or more frames.

Questions about 'XHTML DTD':

Viewed:433

12-Jul-2008
Original Author: W3school however, some changes have been made to the main contents. Related articles:

Did you know?

if you register at Hamid School you can learn web programming and designing for free and also you can save up to 45% on hosting packages offered by Surreyhost.com .

Don't miss out, every minute counts!

Links

Sponsored by: Surreyhost.com

Coded and designed by: Hamid Moudi
HPLA
Follow us: