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

[@microsoft/fast-foundation](./fast-foundation.md) &gt; [Checkbox](./fast-foundation.checkbox.md)

## Checkbox class

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


checked-indicator - The checked indicator


indeterminate-indicator - The indeterminate indicator


- The default slot for the label


control - The element representing the visual checkbox control


label - The label


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

<b>Signature:</b>

```typescript
export declare class Checkbox extends FormAssociatedCheckbox 
```

## Constructors

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

## Properties

|  Property | Modifiers | Type | Description |
|  --- | --- | --- | --- |
|  [indeterminate](./fast-foundation.checkbox.indeterminate.md) |  | boolean | The indeterminate state of the control |
|  [readOnly](./fast-foundation.checkbox.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. |
