Editing Web accessibility (section)

==Accessible Web applications and WAI-ARIA==
For a web page to be accessible all important semantics about the page's functionality must be available so that assistive technology can understand and process the content and adapt it for the user.  
However, as content becomes more and more complex, the standard HTML tags and attributes become inadequate in providing semantics reliably. Modern Web applications often apply scripts to elements to control their functionality and to enable them to act as a control or other dynamic component. These custom components or widgets do not provide a way to convey semantic information to the user agent. [[WAI-ARIA]] (Accessible Rich Internet Applications) is a specification<ref>{{cite web |url=http://www.w3.org/WAI/PF/aria/ |title=Accessible Rich Internet Applications (WAI-ARIA) 1.0 |date=12 December 2012 |publisher=World Wide Web Consortium |access-date=18 December 2012 |archive-date=30 December 2012 |archive-url=https://web.archive.org/web/20121230204403/http://www.w3.org/WAI/PF/aria/ |url-status=live }}</ref> published by the [[World Wide Web Consortium]] that specifies how to increase the [[accessibility]] of [[dynamic content]] and [[Elements of graphical user interfaces|user interface components]] developed with [[Ajax (programming)|Ajax]], [[HTML]], [[JavaScript]] and related technologies. ARIA enables accessibility by enabling the author to provide all the semantics to fully describe its supported behaviour. It also allows each element to expose its current states and properties and its relationships between other elements. Accessibility problems with the focus and tab index are also corrected.