Stands for “Extensible Hypertext Markup Language.” XHTML is markup language used to create webpages. It is just like HTML however makes use of a more strict XML-based syntax. The first model of XHTML (1.0) was standardized in 2000. For a number of years, XHTML was the commonest language used to create web sites. It has since been outdated by HTML5.


As HTML advanced over the primary few a long time of the net, browsers grew to become more and more lenient in how they parsed webpage supply code. The outcome was that web sites have been rendered inconsistently between browsers. One of the principle objectives of XHTML was to make sure webpages regarded the identical throughout a number of browsers.

Since XHTML relies on XML moderately than HTML, webpages coded in XHTML should conform to a strict XML syntax. A webpage that makes use of the “XHTML Strict” doctype (DTD) can’t comprise any errors or invalid tags, leaving no ambiguity for the online browser. However, most XHTML websites used the “XHTML Transitional” doctype, which doesn’t require good syntax and even permits HTML 4.01 tags.

From 2001 to about 2011, XHTML was the usual markup language for net growth. Some builders used a strict XHTML DTD, although most used transitional doctype. Since most net builders most well-liked a more versatile language, the online finally transitioned back to HTML. In 2014, HTML5 was formally beneficial by the W3C. Most trendy browsers nonetheless help each HTML and XHTML.

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