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The meaning of ARIA is air, melody, tune; specifically : an accompanied, elaborate melody sung (as in an opera) by a single voice. How to use aria in a sentence.
- Overview
- Support
- References
- Standardization efforts
- ARIA for scripted widgets
- Videos
Accessible Rich Internet Applications (ARIA) is a set of roles and attributes that define ways to make web content and web applications (especially those developed with JavaScript) more accessible to people with disabilities.
It supplements HTML so that interactions and widgets commonly used in applications can be passed to assistive technologies when there is not otherwise a mechanism. For example, ARIA enables accessible JavaScript widgets, form hints and error messages, live content updates, and more.
The first rule of ARIA use is "If you can use a native HTML element or attribute with the semantics and behavior you require already built in, instead of re-purposing an element and adding an ARIA role, state or property to make it accessible, then do so."
Here's the markup for a progress bar widget:
This progress bar is built using a , which has no meaning. We include ARIA roles and properties to add meaning. In this example, the role="progressbar" attribute informs the browser that this element is actually a JavaScript-powered progress bar widget. The aria-valuemin and aria-valuemax attributes specify the minimum and maximum values for the progress bar, and the aria-valuenow describes the current state of it and therefore must be kept updated with JavaScript.
Along with placing them directly in the markup, ARIA attributes can be added to the element and updated dynamically using JavaScript code like this:
Like any other web technology, there are varying degrees of support for ARIA. Support is based on the operating system and browser being used, as well as the kind of assistive technology interfacing with it. In addition, the version of the operating system, browser, and assistive technology are contributing factors. Older software versions may not support certain ARIA roles, have only partial support, or misreport its functionality.
It is also important to acknowledge that some people who rely on assistive technology are reluctant to upgrade their software, for fear of losing the ability to interact with their computer and browser. Because of this, it is important to use semantic HTML elements whenever possible, as semantic HTML has far better support for assistive technology.
ARIA roles\t
Reference pages covering all the WAI-ARIA roles discussed on MDN.
ARIA states and properties\t
Reference pages covering all the WAI-ARIA states and properties discussed on MDN.
WAI-ARIA specification\t
The W3C specification itself.
WAI-ARIA authoring practices\t
The official best practices documents how best to ARIA-ify common widgets and interactions. An excellent resource.
Writing keyboard-navigable JavaScript widgets\t
Built-in elements like , , etc. have built-in keyboard accessibility. If you 'fake' these with s and ARIA, you must ensure your widgets are keyboard accessible.
Live regions\t
Live regions provide suggestions to screen readers about how to handle changes to the contents of a page.
The following talks are a great way to understand ARIA:
ARIA, Accessibility APIs and coding like you give a damn! – Léonie Watson
Code sample
<div id="percent-loaded" role="progressbar" aria-valuenow="75"aria-valuemin="0" aria-valuemax="100" />In music, an aria ( Italian: [ˈaːrja]; pl.: arie, Italian: [ˈaːrje]; arias in common usage; diminutive form: arietta, Italian: [aˈrjetta]; pl.: ariette; in English simply air) is a self-contained piece for one voice, with or without instrumental or orchestral accompaniment, normally part of a larger work.
Aria Resort and Casino is a luxury resort and casino, and the primary property at the CityCenter complex, located on the Las Vegas Strip in Paradise, Nevada. It is owned by The Blackstone Group and operated by MGM Resorts International . Construction began on June 25, 2006, with a design by Pelli Clarke Pelli Architects.
- Paradise, Nevada, United States
What is an aria in opera? - Classical Music
ARIA Resort & Casino, Las Vegas, Nevada. 1,032,968 likes · 817 talking about this. ARIA Resort & Casino is a AAA Five Diamond Award winning resort in the center of the Las Vegas Strip. 866.359.7111
