Collapsible

An interactive component that can be expanded or collapsed.

Content

Animation

You can use CSS animations to create smooth transitions for opening and closing the Collapsible content. Utilize the data-state attribute in combination with the --height CSS variable to animate the open and closed states.

@keyframes slideDown {
  from { height: 0; }
  to { height: var(--height); }
}

@keyframes slideUp {
  from { height: var(--height); }
  to { height: 0; }
}

[data-scope='accordion'][data-part='item-content'][data-state='open'] {
  animation: slideDown 250ms;
}

[data-scope='accordion'][data-part='item-content'][data-state='closed'] {
  animation: slideUp 200ms;
}

Examples

Learn how to use the Collapsible component in your project. Let's examine the most basic example:

import { Collapsible } from '@ark-ui/react'

export const Basic = () => (
  <Collapsible.Root>
    <Collapsible.Trigger>Toggle</Collapsible.Trigger>
    <Collapsible.Content>Content</Collapsible.Content>
  </Collapsible.Root>
)

import { Collapsible } from '@ark-ui/solid'

export const Basic = () => (
  <Collapsible.Root>
    <Collapsible.Trigger>Toggle</Collapsible.Trigger>
    <Collapsible.Content>Content</Collapsible.Content>
  </Collapsible.Root>
)

<script setup lang="ts">
import { Collapsible } from '@ark-ui/vue'
</script>

<template>
  <Collapsible.Root>
    <Collapsible.Trigger>Toggle</Collapsible.Trigger>
    <Collapsible.Content>Content</Collapsible.Content>
  </Collapsible.Root>
</template>

Events

You can listen for the onExitComplete event to know when the Collapsible.Content is no longer visible:

import { Collapsible } from '@ark-ui/react'

export const OnExitComplete = () => (
  <Collapsible.Root onExitComplete={() => alert('on exit')}>
    <Collapsible.Trigger>Toggle</Collapsible.Trigger>
    <Collapsible.Content>Content</Collapsible.Content>
  </Collapsible.Root>
)

import { Collapsible } from '@ark-ui/solid'

export const OnExitComplete = () => (
  <Collapsible.Root onExitComplete={() => alert('on exit')}>
    <Collapsible.Trigger>Toggle</Collapsible.Trigger>
    <Collapsible.Content>Content</Collapsible.Content>
  </Collapsible.Root>
)

<script setup lang="ts">
import { Collapsible } from '@ark-ui/vue'
</script>

<template>
  <Collapsible.Root @exit-complete="() => console.log('on exit')">
    <Collapsible.Trigger>Toggle</Collapsible.Trigger>
    <Collapsible.Content>Content</Collapsible.Content>
  </Collapsible.Root>
</template>

Lazy Mount

To delay the mounting of the Collapsible.Content, use the lazyMount prop:

import { Collapsible } from '@ark-ui/react'

export const LazyMount = () => (
  <Collapsible.Root lazyMount>
    <Collapsible.Trigger>Toggle</Collapsible.Trigger>
    <Collapsible.Content>Content</Collapsible.Content>
  </Collapsible.Root>
)

import { Collapsible } from '@ark-ui/solid'

export const LazyMount = () => (
  <Collapsible.Root lazyMount>
    <Collapsible.Trigger>Toggle</Collapsible.Trigger>
    <Collapsible.Content>Content</Collapsible.Content>
  </Collapsible.Root>
)

<script setup lang="ts">
import { Collapsible } from '@ark-ui/vue'
</script>

<template>
  <Collapsible.Root lazyMount>
    <Collapsible.Trigger>Toggle</Collapsible.Trigger>
    <Collapsible.Content>Content</Collapsible.Content>
  </Collapsible.Root>
</template>

Unmount on Exit

To remove the Collapsible.Content from the DOM when it is not visible, use the unmountOnExit prop:

import { Collapsible } from '@ark-ui/react'

export const UnmountOnExit = () => (
  <Collapsible.Root unmountOnExit>
    <Collapsible.Trigger>Toggle</Collapsible.Trigger>
    <Collapsible.Content>Content</Collapsible.Content>
  </Collapsible.Root>
)

import { Collapsible } from '@ark-ui/solid'

export const UnmountOnExit = () => (
  <Collapsible.Root unmountOnExit>
    <Collapsible.Trigger>Toggle</Collapsible.Trigger>
    <Collapsible.Content>Content</Collapsible.Content>
  </Collapsible.Root>
)

<script setup lang="ts">
import { Collapsible } from '@ark-ui/vue'
</script>

<template>
  <Collapsible.Root unmountOnExit>
    <Collapsible.Trigger>Toggle</Collapsible.Trigger>
    <Collapsible.Content>Content</Collapsible.Content>
  </Collapsible.Root>
</template>

Combining Lazy Mount and Unmount on Exit

Both lazyMount and unmountOnExit can be combined to ensure that the component is mounted only when the Collapsible is expanded and unmounted when it is collapsed:

import { Collapsible } from '@ark-ui/react'

export const LazyMountAndUnmountOnExit = () => (
  <Collapsible.Root lazyMount unmountOnExit>
    <Collapsible.Trigger>Toggle</Collapsible.Trigger>
    <Collapsible.Content>Content</Collapsible.Content>
  </Collapsible.Root>
)

import { Collapsible } from '@ark-ui/solid'

export const LazyMountAndUnmountOnExit = () => (
  <Collapsible.Root lazyMount unmountOnExit>
    <Collapsible.Trigger>Toggle</Collapsible.Trigger>
    <Collapsible.Content>Content</Collapsible.Content>
  </Collapsible.Root>
)

<script setup lang="ts">
import { Collapsible } from '@ark-ui/vue'
</script>

<template>
  <Collapsible.Root lazyMount unmountOnExit>
    <Collapsible.Trigger>Toggle</Collapsible.Trigger>
    <Collapsible.Content>Content</Collapsible.Content>
  </Collapsible.Root>
</template>

API Reference

Root

Prop	Default	Type
`asChild`		`boolean` Render as a different element type.
`defaultOpen`		`boolean` The initial open state of the collapsible when it is first rendered. Use when you do not need to control its open state.
`disabled`		`boolean` Whether the collapsible is disabled
`id`		`string` The unique identifier of the machine.
`ids`		`Partial<{ root: string; content: string; trigger: string }>` The ids of the elements in the collapsible. Useful for composition.
`lazyMount`	`false`	`boolean` Whether to enable lazy mounting
`onExitComplete`		`() => void` Function called when the animation ends in the closed state.
`onOpenChange`		`(details: OpenChangeDetails) => void` Function called when the popup is opened
`open`		`boolean` Whether the collapsible is open
`unmountOnExit`	`false`	`boolean` Whether to unmount on exit.

Data Attribute	Value
`[data-scope]`	collapsible
`[data-part]`	root
`[data-state]`	"open" \| "closed"

Content

Prop	Default	Type
`asChild`		`boolean` Render as a different element type.

Data Attribute	Value
`[data-scope]`	collapsible
`[data-part]`	content
`[data-state]`	"open" \| "closed"
`[data-disabled]`	Present when disabled

Trigger

Prop	Default	Type
`asChild`		`boolean` Render as a different element type.

Data Attribute	Value
`[data-scope]`	collapsible
`[data-part]`	trigger
`[data-state]`	"open" \| "closed"
`[data-disabled]`	Present when disabled

Accessibility

Keyboard Support

Key	Description
`Space`	Opens/closes the collapsible.
`Enter`	Opens/closes the collapsible.