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ElementInternals: ariaRelevant property - Web APIs | MDN
A string containing one or more of the following values, space separated:
"additions"
Additions of Element Nodes within the live region should be considered relevant.
"removals"
Deletion of Nodes from the live region should be considered relevant.
"text"
Changes to the textual content of existing nodes should be considered relevant.
"all"
Equivalent to "additions removals text".
In this example the value of ariaRelevant is set to "all".
class CustomEl extends HTMLElement {
constructor() {
super();
this.internals_ = this.attachInternals();
this.internals_.ariaRelevant = "all";
}
// …
}
