An element whose implicit native role semantics will not be mapped to the accessibility API.
Description
New in ARIA 1.1
An element whose implicit native role semantics will not be mapped to the accessibility API. See synonym presentation.
Note: Note regarding the ARIA 1.1 none role.§
In ARIA 1.1, the working group introduced none as a synonym to the presentation role, due to author confusion surrounding the intended meaning of the word “presentation” or “presentational.” Many individuals erroneously consider role=”presentation” to be synonymous with aria-hidden=”true”, and we believe role=”none” conveys the actual meaning more unambiguously.
Until implementations include sufficient support for role=”none”, web authors are advised to use the presentation role alone role=”presentation” or redundantly as a fallback to the none role role=”none presentation”.
Example
HTML Example
<nav aria-label="Mythical University"><ul id="menubar1"role="menubar"aria-label="Mythical University"><li><a role="menuitem"aria-haspopup="true"aria-expanded="false"href="#"tabindex="0">About</a><ul role="menu" aria-label="About">
<li role=”none”><a role="menuitem"href="/mb-about.html#overview"tabindex="-1">Overview</a></li>
<li role=”none”><a role="menuitem"href="/mb-about.html#admin"tabindex="-1">Administration
…</li></ul></nav><script type="text/javascript">var menubar = new Menubar(document.getElementById('menubar1'));menubar.init();</script>
Characteristics
See role presentation
Semantic HTML
No HTML element equivalent.
The role “none” was added to act as an alias for role=”presentation”, and both are the same and perform the same action. This was meant to provide clarity for those who were confused by the word “presentation.”
It was also proposed that role=”” also be available to perform the same behavior as role=”none” and role=”presentation”. However, this presented too many implicit role conflicts within browsers, assistive technologies, and framework development, so role=”” should never be used in place of role=”none” or role=”presentation”.
Reference
- W3C (opens new window)