/Web APIs

Element: ariaPosInSet property

The ariaPosInSet property of the Element interface reflects the value of the aria-posinset attribute, which defines an element's number or position in the current set of listitems or treeitems.


A string containing an integer.


In this example the aria-posinset attribute on the element with an ID of article2 is set to "2". Using ariaPosInSet we update the value to "3".

<article id="article1" aria-posinset="1"></article>
<article id="article2" aria-posinset="2"></article>
let el = document.getElementById("article2");
console.log(el.ariaPosInSet); // "2"
el.ariaPosInSet = "3";
console.log(el.ariaPosInSet); // "3"


Browser compatibility

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ariaPosInSet 81 81 No No 68 12.1 81 81 No 58 12.2 13.0

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