No. XML is a meta-language. Rather than thinking of XML as a language, think of it as a way to build languages. It's a set of rules programmers can use to create their own languages.
HTML is an SGML based markup language. It doesn't comply with the strict rules set forth by XML. Instead, it relies on a long history of doing things a certain way depending on context.
XHTML was a revisioning of HTML as an XML compliant language. Essentially, it adjusted HTML so that it didn't break the XML rules.
XHTML has now been replaced by the HTML 5 draft (which is at this point a de facto standard.) XHTML 2.0 has not been successful, and the Working Group hasn't moved on it in years.
basikly xhtml is a mics of html and xml. the difference in html and xhtml is that xhtml is a more strict on the syntax and defined as a xml document. xml is a self defined language... in short it is a strikter html in xml format...
No. HTML existed before XHTML. XHTML combines XML and HTML, so it is an advancement on HTML.
XHTML is a combination of largely HTML and a small portion of XML.
Yes it is. the xhtml 1.0 to be precise!
HTML or sometimes XHTML or even XML
HTML and XHTML are two different languages used for web and application design. XHTML was a popular choice from about the year 2000, to 2011. HTML 5 is intended to replace XHTML. XHTML followed the basic rules of XML-based languages. HTML (both prior and since) do not.
There was no XML in HTML 4, and you can only add XML to HTML 5 if you reset the content MIME type. XML hasn't changed. But XML is a language used to define other languages. XML was used to define the standards for XHTML 1.0, the successor to HTML 4. The rules of XML apply in XHTML, because the language is based off of XML. These rules are not, in any way, part of HTML 4. HTML 5 is not, by default, an XML based language. But there is a version that allows one to use the XML (or XHTML) style serialization. If you do this, however, you have to deliver the document using an XML MIME type, like application/html+xml. (Normally, this involves messing with the server a bit.) See the related link for HTML 5 Doctor's take on XML serialization in HTML 5, as well as some other, useful links.
XML has not replace HTML. For about ten years starting around 2001, XHTML, and XML-based language was standardized and used to create webpages. But in recent years, a new draft that is non-XML-based has taken hold. This language, HTML5, is gaining converts everyday, and will eventually supplant XHTML as the de facto standard.
No, XHTML is a parallel language to HTML. XHTML is a XML language definition where tags have similar meanings to corresponding HTML tags. A crude analogy would be that XHTML and HTML are half-brothers; Lot's of similarities but also distinct differences. The successor of HTML is HTML5, the successor of XHMTL is XHTML5.
The HTML language, which was originally based of SGML, was rewritten following XML guidelines for the XHTML 1.0 and 1.1 standards. These standards were well embraced by the web development community, but XHTML has since been largely supplanted in new projects by HTML 5 (which is not XML compliant.)
HTML uses SGML-like syntax. XHTML 1.0 uses XML syntax. HTML uses HTML DOM, XHTML uses XML DOM. There are small differences between those. Other than that, they're identical. They use same tags, attributes, have same semantics. XHTML 1.0 specification is very short and refers to HTML 4 specification for all important matters.
XHTML. Its full name is eXtensible HyperText Markup Language.