XHTML Syntax Rules

All XHTML Document can have only one root element that is <html>all other elements should be nested within the root element. There will be only one parent called a root element which can have its children(sub elements) nested within it. Sub elements must be in pairs and correctly nested within their parent element. The basic document structure is:

(doctype)
<html xmlns="http://www.vyom.co.in/xhtml">
<head>
<title>...</title>
... </head>
<body>... </body>
</html>

Notice the (doctype) and the "xmlns" attribute on the opening html tag. You should also include a character set meta tag in the <head> element.

XHTML elements must be properly nested

Wrong:

<p>This is our site <em>paragraph.</p></em>

Right:

<p>This is our site <em>paragraph.</em></p>

Since XML is case-sensitive. Tag names must be in lowercase.

Wrong:

<PRE>Some preformatted text.</PRE>

Right:

<pre>Some preformatted text.</pre>

All Attributes that are used here must be in lower case

Wrong:

Right:

All elements must be closed

This includes elements that traditionally do not contain any content, such as images, form inputs, meta tags, etc.

Wrong:

<p>Welcome to vyom.
<p>This is our website

Right:

<p>Welcome to vyom..</p>
<p>This is our website.</p>

Elements which dont have closing tags must be closed with slash inside the tag.

<br> becomes <br />
<hr> becomes <hr />
<input type="text">becomes <input type="text" />

All attributes values must be quoted

Wrong:

<a href=http://www.vyom.co.in>example link</a>

Right:

<a href="http://www.vyom.co.in">example link</a>

Attribute minimization is forbidden

Wrong:

Right:

All image tags should have "alt" attributes.

Wrong:

Right:

The "id" attribute and the "name" attribute-

Element ids which should be uniqe eventually will replace element names.For now, to ensure backword-compatibility it is recommended to use both,for example, many of the form fields are accessed by their names. In cascading style sheets and various scripting languages Ids are used .

The XHTML DTD defines mandatory elements

Related XHTML Tutorial Books
HTML & XHTML The Definitive Guide
XHML In A Nutshell - A Desktop Quick Reference
XHTML Black Book: A Complete Guide to Mastering XHTML
Special Edition Using HTML and XHTML
HTML & XHTML: The Complete Reference (Osborne Complete Reference)
More Link » »

XHTML Tutorial FAQs
Why is XHTML needed? Isn't HTML good enough?
What are the advantages of using XHTML rather than HTML?
Can I just put the XML declaration on top of existing HTML documents? Can I intermix HTML 4.01 and XHTML documents?
What is the easiest way to convert my HTML documents to XHTML?
Why are browsers so fussy about XML? They were more accepting with HTML.
More Link » »

XHTML Tutorial Interview Questions
What is XHTML?
Why XHTML Modularization?
What about elements that don't have a close tag, such as < IMG > and < hr > ?
Why do we need modular DTDs?
Why is this XSLT important?
More Link » »

XHTML Tutorial Articles
XHTML: The Clean Code Solution
XHTML Syntax
Five XHTML Elements You Didn�t Know But Were.
XHTML, from an HTML Starting Point
More Link » »

XHTML Tutorial News
XHTML 2.0: Working Draft
XHTML Role Attribute Module: Working Draft
Publisher's description of XHTML Mobile Profile
Mission of the XHTML2 Working Group
XHTML News: �Role Attribute� and �2.0″ Working Drafts
More Link » »

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Keywords:xhtml tutorial, xhtml validator, html xhtml, tag com xhtml, xhtml editor, xhtml templates, xhtml 1.0, xhtml code, xhtml doctype, xhtml validation

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