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How a page is created. Toggle How a page is created subsection. Method 1: searching. Method 2: previewing a red link. Method 3: saving a red link. Method 4: changing a URL. Namespace considerations. Toggle Namespace considerations subsection. Articles versus other namespaces.
It's the most common web development reference site on the Web, and is very well known. -- Jatkins ( talk - contribs) 21:15, 25 February 2011 (UTC) [ reply] ReadWriteWeb describes it as "one of the oldest and most popular web development tutorial sites on the Web". A Google search for "W3Schools" yields over 843,000 results.
Event bubbling. Event bubbling is a type of DOM event propagation [1] where the event first triggers on the innermost target element, and then successively triggers on the ancestors (parents) of the target element in the same nesting hierarchy till it reaches the outermost DOM element or document object [2] (Provided the handler is initialized).
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. [1] [2]
HackerRank. HackerRank is a technology company [1] that focuses on competitive programming challenges for both consumers and businesses. Developers compete by writing programs according to provided specifications. [2] [3] HackerRank's programming challenges can be solved in a variety of programming languages (including Java, C++, PHP, Python ...
SimpleXML. SimpleXML is a PHP extension that allows users to easily [1] [2] manipulate/use XML data. It was introduced in PHP 5 as an object oriented approach to the XML DOM providing an object that can be processed with normal property selectors and array iterators. [3] [4] It represents an easy way of getting an element's attributes and ...
Free Yes No No Yes MySQL, SQLite (SQL.js) PhpFiddle : Free Yes No No Yes MySQL, SQLite runnable : Free Yes Yes Yes No SQL Fiddle : Free No No No Yes MySQL, Oracle, PostgreSQL, SQLite (WebSQL), SQLite (SQL.js) W3Schools: Free Yes No No Yes tutorials