The ariaRelevant property of the ElementInternals interface reflects the value of the aria-relevant attribute, which indicates what notifications the user agent will trigger when the accessibility tree within a live region is modified. This is used to describe what changes in an aria-live region are relevant and should be announced.


Setting aria attributes on ElementInternals allows default semantics to be defined on a custom element. These may be overwritten by author-defined attributes, but ensure that default semantics are retained should the author delete those attributes, or fail to add them at all. For more information see the Accessibility Object Model explainer.


let ariaRelevant = ElementInternals.ariaRelevant;
ElementInternals.ariaRelevant = ariaRelevant;


A DOMString containing one or more of the following values, space separated:

Additions of Element Nodes within the live region should be considered relevant.
Deletion of Nodes from the live region should be considered relevant.
Changes to the textual content of existing nodes should be considered relevant.
Equivalent to "additions removals text".


In this example the value of ariaRelevant is set to "all".

this.internals_.ariaRelevant = "all";

Browser compatibility

BCD tables only load in the browser