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@mfp-design-system/switch

v3.0.0

Published

a day ago

Switch (toggle) web component for the mfp-design-system, built with Lit.

0High
0Medium
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mfreundschuhpula

@mfp-design-system/switch

A Lit-based <mfp-switch> toggle component, fully form-associated. Visually a sliding pill; semantically role="switch".

Install

npm install @mfp-design-system/switch @mfp-design-system/tokens

Usage

import '@mfp-design-system/switch';
import '@mfp-design-system/tokens/css';

<mfp-switch label="Dark mode"></mfp-switch>
<mfp-switch checked label="Notifications"></mfp-switch>
<mfp-switch disabled label="Premium feature"></mfp-switch>

API

| Attribute | Type | Default | Description | | ---------- | --------- | ------- | ------------------------------------------ | | checked | boolean | false | On/off state | | disabled | boolean | false | Disables the switch | | required | boolean | false | Marks as required (must be on to validate) | | name | string | '' | Form field name | | value | string | 'on' | Value submitted with the form when on | | label | string | '' | Label text (or use the default slot) |

Events

change — fires when the switch toggles. event.detail.checked is the new state.

Forms

Form-associated via ElementInternals. When on, submits value under name; when off, submits nothing.

Shadow parts

track, thumb, label.

Switch vs. Checkbox

Use Switch for binary settings that take effect immediately (dark mode, notifications, feature flags). Use Checkbox for choices that take effect on form submission (terms agreement, multi-select).