# Switch

A React component in [Beamline](https://beamline.io/)'s [Form controls](https://beamline.io/components/forms) category, in the free sample. Live demo: https://beamline.io/components/switch

A setting that applies at once: a thumb that slides on a spring and stretches under the finger, with an optional label before or after.

## Use it for

- Settings that take effect immediately when toggled.

## Not for

- Choices that apply only after Save ([checkbox](https://beamline.io/components/checkbox)).

## Anatomy

- track (Radix switch)
- thumb
- label
- description

## Variants

- **size**: sm, md
- **labelPosition**: end, start

## States

- off
- on
- pressed
- disabled

## Keyboard

- Space / Enter toggles

## Motion

The thumb slides on --pui-ease-spring (no overshoot) and widens 4px while pressed. Toggled, the knob reaches toward its new side by the look's spread (--m-morph-spread; rigid looks keep their knob) and gathers there, never overshooting.

## Props

| Prop | Type | Default | Description |
| --- | --- | --- | --- |
| `checked / defaultChecked / onCheckedChange` | `boolean` | — |  |
| `label` | `ReactNode` | — |  |
| `description` | `ReactNode` | — |  |
| `labelPosition` | `"start" \| "end"` | `"end"` |  |
| `size` | `"sm" \| "md"` | — |  |
| `classNames` | `SwitchClassNames` | — | Classes for the documented parts. |
| `style / ref` | `CSSProperties / Ref` | — | Visual root style; ref targets native Radix switch button. |

## Dependencies

`@radix-ui/react-switch`, `motion`

## Import

```tsx
import { Switch } from "@/components/switch/switch";
```

## Get it

Switch is part of Beamline: 190 React components and screens your coding agent (Claude Code, Codex, Cursor or any MCP client) installs into your app through Beamline's MCP server, as a ready-built package or as plain React source you can change. $49 one payment (regular $200), no subscription, a year of updates, one licence for your whole team. Switch is in the free sample, which costs nothing. [Get Beamline](https://beamline.io/checkout?pack=complete) · [Connect your agent](https://beamline.io/connect)

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