What is HTML and XHTML

**scottlan** · January 29th, 2011, 15:32

are these both are same? are these both programming language? what's the basic difference?

**alex365** · January 31st, 2011, 04:23

The most important difference between the two markup languages is that HyperText Markup Language, or HTML, is an application of SGML (Standard Generalized Markup Language), and allows an author to omit certain tags and use attribute minimization.
The Extensible HyperText Markup Language, or XHTML, is an application of XML (Extensible Markup Language). It doesn’t permit the omission of any tags or the use of attribute minimization.
However, it provides a shorthand notation for empty elements—for example, we could use instead of —which HTML does not. A conforming XML document must be well formed, which, among other things, means that there must be an end tag for every start tag, and that nested tags must be closed in the right order.

For More Information You Can Read These Books Listed Below : -
1. HTML & XHTML: The Definitive Guide, Fifth Edition By
Chuck Musciano (Author), Bill Kennedy (Author)

2. HTML & XHTML: the complete reference
By Thomas A. Powell

**AboutWeb** · January 31st, 2011, 07:05

Nice explication alex365 !

**Sain Cai** · February 1st, 2011, 00:56

Looks like another bot to moi.

**EvaBrown** · February 2nd, 2011, 08:20

The main differences are that XHTML forces webpage authors to be more consistent and to write more legible code. There are a few syntax and grammar differences and a few HTML tags have been dropped and, really, that's about it.

**flashfango** · February 15th, 2011, 21:44

The most important difference between the two markup languages is that HyperText.
Though, that these differences apply only when an XHTML document is served as an application of XML; that is, with a MIME type of application/xhtml+xml, application/xml, or text/xml. An XHTML document served with a MIME type of text/html must be parsed and interpreted as HTML, so the HTML rules apply in this case. A style sheet written for an XHTML document being served with a MIME type of text/html may not work as intended if the document is then served with a MIME type of application/xhtml+xml.

**brenton17jul1948** · February 16th, 2011, 01:11

Although HTML and XHTML appear to have similarities in their syntax, they are significantly different in many ways.

mainly in features like Parsing Modes,Error Handling,Character Encoding (including XML Declaration, meta), Namespaced elements, Namespaced attributes on HTML elements, Namespace attributes on foreign elements, XLink attributes , XML attributes,Attributes, Attribute values ,Space characters ,The DOCTYPE etc..

**AvailHosting** · February 18th, 2011, 06:06

HTML - Static Hyper text mark up language.
DHTML - Dynamic HTML, which allows user to access the resources like contents, menu etc in a web page dynamically, without using java scripts, asp, etc.
Dynamic HTML is a collective term for a combination of new Hypertext Markup Language (HTML) tags and options, that will let you to create Web pages more animated and more responsive to user interaction than any previous versions of HTML. Dynamic HTML can allow Web documents to look and act like desktop applications or multimedia productions.

**AboutWeb** · February 18th, 2011, 16:41

HTML5 is the new version of HTML and is not static at all. I can't wait for developers to finish building HTML5 and all browsers to update so they could read the new code!

**savis** · March 25th, 2011, 02:48

These 4 points are the vital and major differences between HTML & XHTML

• XHTML elements must be properly nested
This text is bold and italic

• XHTML elements must always be closed
This is a paragraph

Empty elements must also be closed
A horizontal rule: <hr />

• XHTML elements must be in lowercase
<body>
This is a paragraph
</body>

• XHTML documents must have one root element

<html>
<head> ... </head>
<body> ... </body>
</html>

**andrepitt77** · May 6th, 2011, 02:18

Both are development languages but very different. HTML, which stands for HyperText Markup Language, is the predominant markup language for web pages. HTML is the basic building-blocks of webpages and XHTML extend versions of the widely-used Hypertext Markup Language (HTML), the language in which web pages are written.

**decent** · May 9th, 2011, 05:40

Originally Posted by flashfango

The most important difference between the two markup languages is that HyperText.
Though, that these differences apply only when an XHTML document is served as an application of XML; that is, with a MIME type of application/xhtml+xml, application/xml, or text/xml. An XHTML document served with a MIME type of text/html must be parsed and interpreted as HTML, so the HTML rules apply in this case. A style sheet written for an XHTML document being served with a MIME type of text/html may not work as intended if the document is then served with a MIME type of application/xhtml+xml.

Yeah true, I agree with you.

**Tanika** · May 28th, 2011, 00:17

Using XHTML authors can able to be more consistent and can able to write legible code. It is easy to switch to XHTML, if you already know HTML. You cannot find that much difference in it. There are some new rules that you will find the XHTML will make you a better programmer.

**jennyjackson** · May 28th, 2011, 06:14

Originally Posted by alex365

The most important difference between the two markup languages is that HyperText Markup Language, or HTML, is an application of SGML (Standard Generalized Markup Language), and allows an author to omit certain tags and use attribute minimization.
The Extensible HyperText Markup Language, or XHTML, is an application of XML (Extensible Markup Language). It doesn’t permit the omission of any tags or the use of attribute minimization.
However, it provides a shorthand notation for empty elements—for example, we could use instead of —which HTML does not. A conforming XML document must be well formed, which, among other things, means that there must be an end tag for every start tag, and that nested tags must be closed in the right order.

For More Information You Can Read These Books Listed Below : -
1. HTML & XHTML: The Definitive Guide, Fifth Edition By
Chuck Musciano (Author), Bill Kennedy (Author)

2. HTML & XHTML: the complete reference
By Thomas A. Powell

thanks alex you share very nice information with complete explanation ..

**JerrickYeoh** · May 30th, 2011, 03:00

They are similar just XHTML is the improvement make from HTML.

HTML is a markup language used for displaying text and documents across different platforms and machines. It was originally intended for a very specific audience, and has expanded to include hypertext, multimedia, as well as the style of the documents displayed.

With XHTML, if you find a need for a new markup tag, you simply define it in an XHTML module and use it in your page as you would any other HTML tag. You can also use XHTML to markup the code as appropriate for the (XHTML compatible) browser that is viewing it.