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  2. W3Schools - Wikipedia

    en.wikipedia.org/wiki/W3Schools

    W3Schools is a freemium educational website for learning coding online. [1] [2] Initially released in 1998, it derives its name from the World Wide Web but is not affiliated with the W3 Consortium. [3] [4] [unreliable source] W3Schools offers courses covering many aspects of web development. [5] W3Schools also publishes free HTML templates.

  3. Canonical link element - Wikipedia

    en.wikipedia.org/wiki/Canonical_link_element

    A canonical link element is an HTML element that helps webmasters prevent duplicate content issues in search engine optimization by specifying the "canonical" or "preferred" version of a web page. It is described in RFC 6596, which went live in April 2012.

  4. HTML - Wikipedia

    en.wikipedia.org/wiki/HTML

    HTML 4 is an SGML application conforming to ISO 8879 – SGML. [20] April 24, 1998 HTML 4.0 [21] was reissued with minor edits without incrementing the version number. December 24, 1999 HTML 4.01 [22] was published as a W3C Recommendation.

  5. Document Object Model - Wikipedia

    en.wikipedia.org/wiki/Document_Object_Model

    In HTML DOM (Document Object Model), every element is a node: [4] A document is a document node. All HTML elements are element nodes. All HTML attributes are attribute nodes. Text inserted into HTML elements are text nodes. Comments are comment nodes.

  6. Hyperlink - Wikipedia

    en.wikipedia.org/wiki/Hyperlink

    An inline link displays remote content without the need for embedding the content. The remote content may be accessed with or without the user following the link. An inline link may display a modified version of the content; for instance, instead of an image, a thumbnail, low resolution preview, cropped section, or magnified section may be shown.

  7. URL redirection - Wikipedia

    en.wikipedia.org/wiki/URL_redirection

    Many large community websites use link redirection on external links to lessen the chance of an exploit that could be used to steal account information, as well as make it clear when a user is leaving a service, to lessen the chance of effective phishing. Here is a simplistic example of such a service, written in PHP.

  8. HTML form - Wikipedia

    en.wikipedia.org/wiki/HTML_form

    The target PHP file then accesses the data passed by the form through PHP's $_POST or $_GET variables, depending on the value of the method attribute used in the form. Here is a basic form handler PHP script that will display the contents of the first_name input field on the page: form.html

  9. Server Side Includes - Wikipedia

    en.wikipedia.org/wiki/Server_Side_Includes

    Server Side Includes (SSI) is a simple interpreted server-side scripting language used almost exclusively for the World Wide Web.It is most useful for including the contents of one or more files into a web page on a web server (see below), using its #include directive.