Element: ariaSetSize property
Baseline
2023
Newly available
Since October 2023, this feature works across the latest devices and browser versions. This feature might not work in older devices or browsers.
The ariaSetSize property of the Element interface reflects the value of the aria-setsize attribute, which defines the number of items in the current set of listitems or treeitems.
Value
A string containing an integer.
Examples
In this example the aria-setsize attribute on the element with an ID of tab-id is set to "3", to inform a device that there are currently 3 tabs in the group. Using ariaSetSize we update the value to "4".
html
<button
role="tab"
aria-selected="true"
aria-setsize="3"
aria-controls="tabpanel-id"
id="tab-id">
Tab label
</button>
js
let el = document.getElementById("tab-id");
console.log(el.ariaSetSize); // 3
el.ariaSetSize = "4";
console.log(el.ariaSetSize); // 4
Specifications
| Specification |
|---|
| Accessible Rich Internet Applications (WAI-ARIA) # dom-ariamixin-ariasetsize |
Browser compatibility
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