XHTML stands
for eXtensible HyperText Markup Language. It is markup used to design websites and webpages.
XHTML is
much stricter than ordinary HTML, and is based on both XML and HTML. Due to
the lax nature of HTML, different web
browsers can sometimes display websites incorrectly since there is more
than one way to interpret poorly written HTML. The strict and formal nature of
XHTML, once fully adopted will allow for web
browsers to display the same page correctly between them. Proper XHTML is
also easier to read for humans.
For example,
the below code shows one of the differences between HTML and XHTML:
Incorrect,
HTML version:
<br>
Correct,
XHTML version:
<br />
The line
break tag in HTML does not have a closing tag, you just type it once and it
creates a line break. In XHTML the rule is that tags that do not have an
closing tag must close themselves within the initial tag. These tags are called
"empty tags." Another empty tag is <hr /> which inserts a
"horizontal rule" or dividing line.
From Wikipedia, the free encyclopedia
Learn XHTML Online
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