HTML
Introduction
The
Hyper
Text
Markup
Language is the fundamental markup language used in the web. It might seem to be simple at first glance. But it is not. The HTML specification is a huge, intensely technical document that contains hundreds of different elements and can have all sorts of applications. It is at times difficult to understand. The last version of HTML is 4.01.
It is now more encouraged to used
XHTML instead of HTML. The difference of the 2 languages is that HTML allows various forms of SGML markup minimization, such as certain end tags being optional. For example, you can write
<hr> in the HTML document. XHTML, on another hand, insists that every element have a closing tag, in this case,
<hr />. The result is that the parse tree (
DOM) in more predictable and clear in the case of XHTML. CSS works better, or at least more predictably, with XHTML than HTML.
See also
WebStandard for HTML validators.
Links
Reference