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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.
This allows labels to stay with their elements when a window is resized and to allow more desktop-like functionality (e.g. clicking a radio button or checkbox's label will activate the associated input element). HTML 5 introduces a number of input tags that can be represented by other interface elements.
<input /> <input> elements allow a variety of standard form controls to be implemented. Standardized in HTML 2.0; still current. Input Types: type="checkbox" A checkbox. Can be checked or unchecked. type="radio" 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.
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
Input CheckboxStateChange Fires when a checkbox is checked or unchecked, either by the user or a script. No No RadioStateChange Fires when a radio button is selected, either by the user or a script. No No close onclose Fires when a request has been made to close the window. No Yes command oncommand Similar to W3C DOMActivate event.
The adoption of HTML audio, as with HTML video, has become polarized between proponents of free and patent-encumbered formats. In 2007, the recommendation to use Vorbis was retracted from the HTML5 specification by the W3C together with that to use Ogg Theora, citing the lack of a format accepted by all the major browser vendors.
Where element names the HTML element type, and attribute is the name of the attribute, set to the provided value.The value may be enclosed in single or double quotes, although values consisting of certain characters can be left unquoted in HTML (but not XHTML).
The principal standardization of the DOM was handled by the World Wide Web Consortium (W3C), which last developed a recommendation in 2004. WHATWG took over the development of the standard, publishing it as a living document. The W3C now publishes stable snapshots of the WHATWG standard. In HTML DOM (Document Object Model), every element is a ...