---
id: fast-foundation.radio
title: Radio class
hide_title: true
---
<!-- Do not edit this file. It is automatically generated by API Documenter. -->

[@microsoft/fast-foundation](./fast-foundation.md) &gt; [Radio](./fast-foundation.radio.md)

## Radio class

A Radio Custom HTML Element. Implements the [ARIA radio](https://www.w3.org/TR/wai-aria-1.1/#radio)<!-- -->.


checked-indicator - The checked indicator


- The default slot for the label


control - The element representing the visual radio control


label - The label


change - Emits a custom change event when the checked state changes

<b>Signature:</b>

```typescript
export declare class Radio extends FormAssociatedRadio implements RadioControl 
```

## Constructors

|  Constructor | Modifiers | Description |
|  --- | --- | --- |
|  [(constructor)()](./fast-foundation.radio._constructor_.md) |  | Constructs a new instance of the <code>Radio</code> class |

## Properties

|  Property | Modifiers | Type | Description |
|  --- | --- | --- | --- |
|  [name](./fast-foundation.radio.name.md) |  | string | The name of the radio. See [name attribute](https://developer.mozilla.org/en-US/docs/Web/HTML/Element/input#htmlattrdefname) for more info. |
|  [readOnly](./fast-foundation.radio.readonly.md) |  | boolean | When true, the control will be immutable by user interaction. See [readonly HTML attribute](https://developer.mozilla.org/en-US/docs/Web/HTML/Attributes/readonly) for more information. |
