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The similarities between HTML 4.01 and XHTML 1.0 led many websites and content management systems to adopt the initial W3C XHTML 1.0 Recommendation. To aid authors in the transition, the W3C provided guidance on how to publish XHTML 1.0 documents in an HTML-compatible manner, and serve them to browsers that were not designed for XHTML. [28] [29]
A well-formed XHTML document adheres to all the syntax requirements of XML. A valid document adheres to the content specification for XHTML, which describes the document structure. The W3C recommends several conventions to ensure an easy migration between HTML and XHTML (see HTML Compatibility Guidelines). The following steps can be applied to ...
The Web Hypertext Application Technology Working Group (WHATWG) began work on the new standard in 2004. At that time, HTML 4.01 had not been updated since 2000, [10] and the World Wide Web Consortium (W3C) was focusing future developments on XHTML 2.0.
Extensible HyperText Markup Language (XHTML): HTML reformulated in XML syntax. XHTML Basic – a subset of XHTML for simple (typically mobile, handheld) devices. It is meant to replace WML, and C-HTML. XHTML Mobile Profile (XHTML MP) – a standard designed for mobile phones and other resource-constrained devices.
From January 2000 until HTML 5 was released, all W3C Recommendations for HTML have been based on XML, using the abbreviation XHTML (Extensible HyperText Markup Language). The language specification requires that XHTML Web documents be well-formed XML documents. This allows for more rigorous and robust documents, by avoiding many syntax errors ...
An HTML element is a type of HTML (HyperText Markup Language) document component, one of several types of HTML nodes (there are also text nodes, comment nodes and others). [ vague ] The first used version of HTML was written by Tim Berners-Lee in 1993 and there have since been many versions of HTML.
The HTML layout engines in modern web browsers perform DOCTYPE "sniffing" or "switching", wherein the DOCTYPE in a document served as text/html determines a layout mode, such as "quirks mode" or "standards mode". The text/html serialization of HTML5, which is not SGML-based, uses the DOCTYPE only for mode selection. Since web browsers are ...
XHTML Basic is suitable for mobile phones, PDAs, pagers, and settop boxes. XHTML Basic was once intended to replace older technologies like WML and C-HTML as more compliant user agents were developed. However, with the rise of HTML5 as the dominant web standard, XHTML Basic has been largely supplanted. HTML5's rich feature set and cross-device ...