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Concept information

Preferred term

XHTML5  

Definition

  • XML documents must be served with an XML Internet media type (often called ‘MIME type’) such as application/xhtml+xml or application/xml, and must conform to strict, well-formed syntax of XML. XHTML 5 is simply XML-serialized HTML 5 data (that is, HTML 5 constrained to XHTML’s strict requirements, e.g., not having any unclosed tags), sent with one of XML media types. HTML that has been written to conform to both the HTML and XHTML specifications and therefore produces the same DOM tree whether parsed as HTML or XML is known as polyglot markup. There is no DTD for XHTML5.

Entry terms

  • Extensible Hypertext Markup Language 5

Identifier

  • XHTML5

Notation

  • application/xhtml+xml
  • application/xhtml+xml;type=xhtml5
  • .htm
  • .html
  • .xht
  • .xhtml
  • xhtml5

In other languages

  • XHTML5

    Estonian

URI

http://publications.europa.eu/resource/authority/file-type/XHTML5

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