XHTML is a combination of HTML and XML (EXtensible Markup Language). XHTML consists of all the elements in HTML 4.01 combined with the syntax of XML.
XML is a markup language where everything has to be marked up correctly, which results in "well-formed" documents. XML was designed to describe data and HTML was designed to display data.
Today's market consists of different browser technologies, some browsers run Internet on computers, and some browsers run Internet on mobile phones and hand helds. The last-mentioned do not have the resources or power to interpret a "bad" markup language.
Therefore - by combining HTML and XML, and their strengths, we got a markup language that is useful now and in the future - XHTML.
XHTML pages can be read by all XML enabled devices AND while waiting for the rest of the world to upgrade to XML supported browsers, XHTML gives you the opportunity to write "well-formed" documents now, that work in all browsers and that are backward browser compatible.
Alleycode automatically formats 'Empty XHTML Elements' with proper space/forward slash. 'DOCTYPE' must be present for this function to work!
Incorrect XHTML tags:
This is a break<br>
Here comes a horizontal rule:<hr>
Here's an image <img src="happy.gif" alt="Happy face">
Correct XHTML tags:
This is a break<br />
Here comes a horizontal rule:<hr />
Here's an image <img src="happy.gif" alt="Happy face" />
