Java script tutorial
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PUBLIC "-//W3C//DTD XHTML 1.0 Strict//EN" "http://www.w3.org/TR/xhtml1/DTD/strict.dtd"> The rest of the document looks like HTML: <html> <head> <title>simple document</title> </head> <body> <p>a simple paragraph</p> </body> </html> Document Type Definitions · DTD specifies the syntax of a web page in SGML. · DTD is used by SGML applications, such as HTML, to specify rules that apply to the markup of documents of a particular type, including a set of element and entity declarations. · XHTML is specified in an SGML document type definition or 'DTD'. · An XHTML DTD describes in precise, computer-readable language the allowed syntax and grammar of XHTML markup. Validating an XHTML document's content involves checking its markup against a DTD and reporting markup errors. There are currently 3 XHTML document types: · STRICT · TRANSITIONAL · FRAMESET XHTML 1.0 specifies three XML document types that correspond to the three HTML 4.0 DTDs: Strict, Transitional, and Frameset. XHTML 1.0 Strict <!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Strict//EN" "http://www.w3.org/TR/xhtml1/DTD/strict.dtd"> Use this when you want really clean markup, free of presentational clutter. Use this together with Cascading Style Sheets. XHTML 1.0 Transitional <!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/transitional.dtd"> |