---
id: fast-foundation.delegatesarialistbox.ariaexpanded
title: DelegatesARIAListbox.ariaExpanded property
hide_title: true
---
<!-- Do not edit this file. It is automatically generated by API Documenter. -->

[@microsoft/fast-foundation](./fast-foundation.md) &gt; [DelegatesARIAListbox](./fast-foundation.delegatesarialistbox.md) &gt; [ariaExpanded](./fast-foundation.delegatesarialistbox.ariaexpanded.md)

## DelegatesARIAListbox.ariaExpanded property

See [https://www.w3.org/TR/wai-aria-1.2/\#listbox](https://www.w3.org/TR/wai-aria-1.2/#listbox) for more information

<b>Signature:</b>

```typescript
ariaExpanded: "true" | "false" | string | null;
```

## Remarks

HTML Attribute: `aria-expanded`
