Would it be better to use xhtml over HTML? How does it effect the backend programming if I use XHTML?

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 !!!

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