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A radio button or option button [citation needed] is a graphical control element that allows the user to choose only one of a predefined set of mutually exclusive options. [1] The singular property of a radio button makes it distinct from checkboxes , where the user can select and unselect any number of items.
A radio button. If multiple radio buttons are given the same name, the user will only be able to select one of them from this group. type="button" A general-purpose button. The element <button> is preferred if possible (i.e., if the client supports it) as it provides richer possibilities. type="submit" A submit button. type="image" An image button.
To demonstrate specificity Inheritance Inheritance is a key feature in CSS; it relies on the ancestor-descendant relationship to operate. Inheritance is the mechanism by which properties are applied not only to a specified element but also to its descendants. Inheritance relies on the document tree, which is the hierarchy of XHTML elements in a page based on nesting. Descendant elements may ...
in CSS [1] in HTML [1]:active A CSS pseudo-class. See the W3C standard. monobook/main.css (screen, projection) — active Used on the active tab button (monobook). monobook/main.css (screen, projection) skins/MonoBook.php: allpagesredirect Redirect in the listings of Special:Allpages and Special:Prefixindex. MediaWiki:Common.css
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The W3C developed a comprehensive test suite to achieve broad interoperability for the full specification by 2014, which was the target date for recommendation. [51] In January 2011, the WHATWG renamed its "HTML5" living standard to "HTML". The W3C nevertheless continues its project to release HTML5. [52] 2012 HTML5 – Candidate Recommendation
The WAI-ARIA has been marked as completed on 20 March 2014 and is therefore a W3C recommendation. [12] WAI-ARIA Overview This is a technical introduction to WAI-ARIA. It describes the problems WAI-ARIA tries to address, the underlying concepts, the technical approach and business reasons for adopting WAI-ARIA. [9] WAI-ARIA Authoring Practices
Include rollover buttons or drop-down menus. A less common use is to create browser-based action games. Although a number of games were created using DHTML during the late 1990s and early 2000s, [4] differences between browsers made this difficult: many techniques had to be implemented in code to enable the games to work on multiple platforms.