Switch

A control that indicates whether a setting is on or off.

Notifications

import { Switch } from '@base-ui/react/switch';
import styles from './index.module.css';

export default function ExampleSwitch() {
  return (
    <label className={styles.Label}>
      <Switch.Root defaultChecked className={styles.Switch}>
        <Switch.Thumb className={styles.Thumb} />
      </Switch.Root>
      Notifications
    </label>
  );
}

Usage guidelines

Form controls must have an accessible name: It can be created using a <label> element or the Field component. See Labeling a switch and the forms guide.

Anatomy

Import the component and assemble its parts:

Anatomy

import { Switch } from '@base-ui/react/switch';

<Switch.Root>
  <Switch.Thumb />
</Switch.Root>

Examples

Labeling a switch

An enclosing <label> is the simplest labeling pattern:

Wrapping a label around a switch

<label>
  <Switch.Root />
  Notifications
</label>

Rendering as a native button

By default, <Switch.Root> renders a <span> element to support enclosing labels. Prefer rendering the switch as a native button when using sibling labels (htmlFor/id).

Sibling label pattern with a native button

<div>
  <label htmlFor="notifications-switch">Notifications</label>
  <Switch.Root id="notifications-switch" nativeButton render={<button />}>
    <Switch.Thumb />
  </Switch.Root>
</div>

Native buttons with wrapping labels are supported by using the render callback to avoid invalid HTML, so the hidden input is placed outside the label:

Render callback

<Switch.Root
  nativeButton
  render={(buttonProps) => (
    <label>
      <button {...buttonProps} />
      Notifications
    </label>
  )}
/>

Form integration

Use Field to handle label associations and form integration:

Using Switch in a form

<Form>
  <Field.Root name="notifications">
    <Field.Label>
      <Switch.Root />
      Notifications
    </Field.Label>
  </Field.Root>
</Form>

API reference

Root

Represents the switch itself. Renders a <span> element and a hidden <input> beside.

namestring—

Name: name
Description: Identifies the field when a form is submitted.
Type: string | undefined

defaultCheckedbooleanfalse

Name: defaultChecked
Description: Whether the switch is initially active.

To render a controlled switch, use the checked prop instead.
Type: boolean | undefined
Default: false

checkedboolean—

Name: checked
Description: Whether the switch is currently active.

To render an uncontrolled switch, use the defaultChecked prop instead.
Type: boolean | undefined

onCheckedChangefunction—

Name: onCheckedChange
Description: Event handler called when the switch is activated or deactivated.
Type: | (( checked: boolean, eventDetails: Switch.Root.ChangeEventDetails, ) => void) | undefined

valuestring—

Name: value
Description: The value submitted with the form when the switch is on. By default, switch submits the “on” value, matching native checkbox behavior.
Type: string | undefined

formstring—

Name: form
Description: Identifies the form that owns the hidden input. Useful when the switch is rendered outside the form.
Type: string | undefined

nativeButtonbooleanfalse

Name: nativeButton
Description: Whether the component renders a native <button> element when replacing it via the render prop. Set to true if the rendered element is a native button.
Type: boolean | undefined
Default: false

uncheckedValuestring—

Name: uncheckedValue
Description: The value submitted with the form when the switch is off. By default, unchecked switches do not submit any value, matching native checkbox behavior.
Type: string | undefined

disabledbooleanfalse

Name: disabled
Description: Whether the component should ignore user interaction.
Type: boolean | undefined
Default: false

readOnlybooleanfalse

Name: readOnly
Description: Whether the user should be unable to activate or deactivate the switch.
Type: boolean | undefined
Default: false

requiredbooleanfalse

Name: required
Description: Whether the user must activate the switch before submitting a form.
Type: boolean | undefined
Default: false

inputRefReact.Ref<HTMLInputElement>—

Name: inputRef
Description: A ref to access the hidden <input> element.
Type: React.Ref<HTMLInputElement> | undefined

idstring—

Name: id
Description: The id of the switch element.
Type: string | undefined

classNamestring | function—

Name: className
Description: CSS class applied to the element, or a function that returns a class based on the component’s state.
Type: | string | ((state: Switch.Root.State) => string | undefined) | undefined

styleReact.CSSProperties | function—

Name: style
Type: | React.CSSProperties | (( state: Switch.Root.State, ) => React.CSSProperties | undefined) | undefined

renderReactElement | function—

Name: render
Description: Allows you to replace the component’s HTML element with a different tag, or compose it with another component.

Accepts a ReactElement or a function that returns the element to render.
Type: | ReactElement | (( props: HTMLProps, state: Switch.Root.State, ) => ReactElement) | undefined

data-checked

Present when the switch is checked.

data-unchecked

Present when the switch is not checked.

data-disabled

Present when the switch is disabled.

data-readonly

Present when the switch is readonly.

data-required

Present when the switch is required.

data-valid

Present when the switch is in valid state (when wrapped in Field.Root).

data-invalid

Present when the switch is in invalid state (when wrapped in Field.Root).

data-dirty

Present when the switch’s value has changed (when wrapped in Field.Root).

data-touched

Present when the switch has been touched (when wrapped in Field.Root).

data-filled

Present when the switch is active (when wrapped in Field.Root).

data-focused

Present when the switch is focused (when wrapped in Field.Root).

Attribute	Description	-
`data-checked`	Present when the switch is checked.
`data-unchecked`	Present when the switch is not checked.
`data-disabled`	Present when the switch is disabled.
`data-readonly`	Present when the switch is readonly.
`data-required`	Present when the switch is required.
`data-valid`	Present when the switch is in valid state (when wrapped in Field.Root).
`data-invalid`	Present when the switch is in invalid state (when wrapped in Field.Root).
`data-dirty`	Present when the switch’s value has changed (when wrapped in Field.Root).
`data-touched`	Present when the switch has been touched (when wrapped in Field.Root).
`data-filled`	Present when the switch is active (when wrapped in Field.Root).
`data-focused`	Present when the switch is focused (when wrapped in Field.Root).

Switch.Root.PropsHide

Re-Export of Root props as SwitchRootProps

Switch.Root.StateHide

type SwitchRootState = {
  /** Whether the switch is currently active. */
  checked: boolean;
  /** Whether the component should ignore user interaction. */
  disabled: boolean;
  /** Whether the user should be unable to activate or deactivate the switch. */
  readOnly: boolean;
  /** Whether the user must activate the switch before submitting a form. */
  required: boolean;
  /** Whether the field has been touched. */
  touched: boolean;
  /** Whether the field value has changed from its initial value. */
  dirty: boolean;
  /** Whether the field is valid. */
  valid: boolean | null;
  /** Whether the field has a value. */
  filled: boolean;
  /** Whether the field is focused. */
  focused: boolean;
}

Switch.Root.ChangeEventReasonHide

type SwitchRootChangeEventReason = 'none'

Switch.Root.ChangeEventDetailsHide

type SwitchRootChangeEventDetails = {
  /** The reason for the event. */
  reason: 'none';
  /** The native event associated with the custom event. */
  event: Event;
  /** Cancels Base UI from handling the event. */
  cancel: () => void;
  /** Allows the event to propagate in cases where Base UI will stop the propagation. */
  allowPropagation: () => void;
  /** Indicates whether the event has been canceled. */
  isCanceled: boolean;
  /** Indicates whether the event is allowed to propagate. */
  isPropagationAllowed: boolean;
  /** The element that triggered the event, if applicable. */
  trigger: Element | undefined;
}

Thumb

The movable part of the switch that indicates whether the switch is on or off. Renders a <span>.