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W3C Markup Validation Service. The Markup Validation Service is a validator by the World Wide Web Consortium (W3C) that allows Internet users to check pre-HTML5 HTML and XHTML documents for well-formed markup against a document type definition (DTD). Markup validation is an important step towards ensuring the technical quality of web pages.
The Document Object Model ( DOM) is a cross-platform and language-independent interface that treats an HTML or XML document as a tree structure wherein each node is an object representing a part of the document. The DOM represents a document with a logical tree. Each branch of the tree ends in a node, and each node contains objects.
A query string is a part of a uniform resource locator (URL) that assigns values to specified parameters. A query string commonly includes fields added to a base URL by a Web browser or other client application, for example as part of an HTML document, choosing the appearance of a page, or jumping to positions in multimedia content. An address ...
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The data URI scheme is a uniform resource identifier (URI) scheme that provides a way to include data in-line in Web pages as if they were external resources. It is a form of file literal or here document. This technique allows normally separate elements such as images and style sheets to be fetched in a single Hypertext Transfer Protocol (HTTP ...
A web service ( WS) is either: a service offered by an electronic device to another electronic device, communicating with each other via the Internet, or. a server running on a computer device, listening for requests at a particular port over a network, serving web documents ( HTML, JSON, XML, images). [citation needed] In a web service, a web ...
A font is a particular set of glyphs (character shapes), differentiated from other fonts in the same family by additional properties such as stroke weight, slant, relative width, etc. The CSS term font face is matched with "font"; it is decided by a combination of the font family and the additional properties.
XHTML 1.0 was "a reformulation of the three HTML 4 document types as applications of XML 1.0". [7] The World Wide Web Consortium (W3C) also simultaneously maintained the HTML 4.01 Recommendation.