We assume you have understood all the concepts related to XHTML. Therefore, you should be able to write your HTML document into a well-formed XHTML document and get a cleaner version of your website.
You can convert your existing HTML website into XHTML website.
Let us go through some important steps. To convert your existing document, you must first decide which DTD you are going to adhere to, and include document type definition at the top of the document.
Make sure you have all other required elements. These include a root element <html> that indicates an XML namespace, a <head> element, a <title> element contained within the <head> element, and a <body> element.
Convert all element keywords and attribute names to lowercase.
Ensure that all attributes are in a name="value" format.
Make sure that all container elements have closing tags.
Place a forward slash inside all standalone elements. For example, rewrite all <br> elements as <br />.
Designate client-side script code and style sheet code as CDATA sections.
Still XHTML is being improved and its next version XHTML 1.1 has been drafted. We have discussed this in detail in XHTML Version 1.1 chapter.
XHTML tags, characters, and entities are same as HTML, so if you already know HTML then you do not need to put extra effort to learn these subjects, especially for XHTML. We have listed out all HTML stuff along with XHTML tutorial also, because they are applicable to XHTML as well.
We have listed out various resources for XHTML and HTML so if you are interested and you have time in hand, then we recommend you to go through these resources to enhance your understanding on XHTML. Otherwise this tutorial must have given you enough knowledge to write your web pages using XHTML.
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