---
id: fast-foundation.ariaglobalstatesandproperties.ariainvalid
title: ARIAGlobalStatesAndProperties.ariaInvalid property
hide_title: true
---
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[@microsoft/fast-foundation](./fast-foundation.md) &gt; [ARIAGlobalStatesAndProperties](./fast-foundation.ariaglobalstatesandproperties.md) &gt; [ariaInvalid](./fast-foundation.ariaglobalstatesandproperties.ariainvalid.md)

## ARIAGlobalStatesAndProperties.ariaInvalid property

Indicates the entered value does not conform to the format expected by the application.

[https://www.w3.org/TR/wai-aria-1.1/\#aria-invalid](https://www.w3.org/TR/wai-aria-1.1/#aria-invalid)

<b>Signature:</b>

```typescript
ariaInvalid: "false" | "true" | "grammar" | "spelling" | string | null;
```

## Remarks

HTML Attribute: aria-invalid
