---
id: fast-foundation.listboxoption.checked
title: ListboxOption.checked property
hide_title: true
---
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[@microsoft/fast-foundation](./fast-foundation.md) &gt; [ListboxOption](./fast-foundation.listboxoption.md) &gt; [checked](./fast-foundation.listboxoption.checked.md)

## ListboxOption.checked property

The checked state is used when the parent listbox is in multiple selection mode. To avoid accessibility conflicts, the checked state should not be present in single selection mode.

<b>Signature:</b>

```typescript
checked?: boolean;
```