HTML and XHTML are the markup languages used to create a solid foundation for your website or web application, and articles in this category generally touch upon the semantics and accessibility aspects of marking up web pages.
The W3C’s HTML and XHTML Frequently Answered Questions.
How to install the W3C HTML Validator on Mac OS X.
An interesting discussion on the use of HTML’s heading elements.
Use your RSS reader to regularly check that your site is valid.
WaSP asks the W3C how multimedia objects should be inserted into web documents.
Real world examples of why validation is very important and can be a great help.
Further thoughts on structural naming conventions from Eric Meyer.
Interesting ideas on naming conventions for common page elements.
An excellent guide to creating accessible web forms.
Anne van Kesteren writes about the XML entities that must be encoded in Ampersands matter. One of those entities is…
DTD Mapper helps you decrypt Document Type Definitions.
A large collection of resources on HTML, XHTML, CSS, accessibility, usability, and more.
How to extend XHTML to make it allow the target attribute.
In his article When Semantic Markup Goes Bad, Matthew Thomas writes about why always replacing <i> and <b> with <em>…
Interesting discussion on how to launch new windows when using XHTML 1.0 Strict.
Simon Willison explains how he keeps the XHTML on his site valid.
How should a numbered list of titles and descriptions be marked up?
Different methods to embed Flash or QuickTime content and keep your XHTML valid.
From A List Apart #174: How to make links to pop-up windows accessible.
A nice article on creating structured tables.