What are ARIA attributes?
Accessible Rich Internet Applications (ARIA) is a set of attributes that define ways to make web content and web applications (especially those developed with JavaScript) more accessible to people with disabilities. For instance, native elements have built-in keyboard accessibility, roles and states.
What are the three types of ARIA attributes?
These attributes are used to support the widget roles.
- aria-autocomplete.
- aria-checked (state)
- aria-disabled (state)
- aria-expanded (state)
- aria-haspopup.
- aria-hidden (state)
- aria-invalid (state)
- aria-label.
What are WAI-ARIA roles?
A WAI-ARIA role is set on an element using a role attribute, similar to the role attribute defined in Role Attribute [ role-attribute ]. The roles defined in this specification include a collection of document landmarks and the WAI-ARIA role taxonomy.
How many ARIA attributes are there?
35 aria properties
While there are 35 aria properties and states the W3C defines and which you can read more about on the W3C site, here are the ones we believe to most commonly used and practical for most web pages/applications.
What is aria value?
The aria-valuenow attribute is used to define the current value for a range widget such as a slider, spinbutton or progressbar. If the current value is not known, the author should not set the aria-valuenow attribute. For example, a slider may have rendered values of small , medium , and large .
What is ARIA Haspopup?
Indicates the availability and type of interactive popup element, such as menu or dialog, that can be triggered by an element.
What is ARIA autocomplete?
Indicates whether inputting text could trigger display of one or more predictions of the user’s intended value for an input and specifies how predictions would be presented if they are made.
What is the difference between hidden aria-hidden true?
Note: The aria-hidden indicates that the elements and all of its children are not visible to any user as implemented by the developer….HTML.
| HTML hidden | aria-hidden |
|---|---|
| HTML hidden hides everything from the user. | ARIA’s aria-hidden, hides content from the assisting technology |
What is aria-controls bootstrap?
The aria-controls attribute creates a cause and effect relationship. It identifies the element(s) that are controlled by the current element, when that relationship isn’t represented in the DOM. For example a button that controls the display of information contained within a div : HTML.
What is the use of aria-Haspopup?
[ aria-haspopup ] indicates the availability and type of interactive popup element, such as menu or dialog, that can be triggered by an element. A popup element usually appears as a block of content that is on top of other content.
What are the main features of WAI ARIA?
WAI-ARIA (Web Accessibility Initiative – Accessible Rich Internet Applications) is a specification written by the W3C, defining a set of additional HTML attributes that can be applied to elements to provide additional semantics and improve accessibility wherever it is lacking. There are three main features defined in the spec:
How to check WAI-ARIA state and property attributes?
Check that the required states and properties for the role are present. Check that no WAI-ARIA states or properties that are neither required, supported, nor inherited are present. Check that the state and property values are updated to reflect the current state when the user interface component changes state.
Which is an example of WAI-ARIA in JavaScript?
The following snippet from The Open Ajax Accessibility Examples, Example 32, shows WAI-ARIA mark-up for a slider created in Javascript. Note that the javascript sets the attributes aria-valuemin, aria-valuemax, and aria-valuenow:
Where can I find WAI-ARIA working group notes?
Editors’ drafts under development can be accessed in the WAI-ARIA GitHub Repository. W3C Recommendations and Working Group Notes are briefly explained in How WAI Develops Accessibility Guidelines through the W3C Process, which also describes milestones in the W3C Process.
