---
url: "https://vueda.dev/v3/reference/api/vue/Collapsible.md"
title: "Collapsible"
---

# Collapsible

## Overview

Root collapsible component built on Reka UI's CollapsibleRoot.

Theme entry: [Collapsible](/v3/reference/theming/keys/Collapsible.md)

## Props

| Name | Type | Required | Default | Description |
| --- | --- | --- | --- | --- |
| <span id="prop-themeOverride">themeOverride</span> | `Object` |  | `null` | A partial ThemeObject keyed by component name, merged over this component's theme and provided to descendants. |
| <span id="prop-class">class</span> | `import('vue').HTMLAttributes['class']` |  | `undefined` | Additional CSS classes to apply to the root element. |
| <span id="prop-modelValue">modelValue</span> | `boolean` |  | `undefined` | The controlled open state. |
| <span id="prop-defaultOpen">defaultOpen</span> | `boolean` |  | `undefined` | The default open state. |
| <span id="prop-unmountOnHide">unmountOnHide</span> | `boolean` |  | `true` | Whether to unmount the content when closed. Set false to preserve form fields and their validation. |
| <span id="prop-disabled">disabled</span> | `boolean` |  | `undefined` | Whether the collapsible is disabled. |
| <span id="prop-dir">dir</span> | `string` |  | `undefined` | The reading direction. |
| <span id="prop-as">as</span> | `string\|object` |  | `undefined` | The element or component to render as. |
| <span id="prop-asChild">asChild</span> | `boolean` |  | `false` | When true, merges props onto the child element instead of rendering a wrapper. |

## Slots

### `default` {#slot-default}

Scoped slot.

## Events

| Name | Description |
| --- | --- |
| `update:modelValue` | Emitted when the value changes. |

[Full event reference](/v3/reference/api/vue/Collapsible/events.md)

## Source

`client/lib/shell/collapsible/Collapsible.vue`