Components
Accordion

Accordion

A collapsible component for displaying content in a vertical stack.

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Features

  • Full keyboard navigation
  • Supports horizontal and vertical orientation
  • Right-to-Left (RTL) support
  • Single or multiple item expansion
  • Controlled and uncontrolled modes
  • Collapse each accordion item

Anatomy

To set up the accordion correctly, it's essential to understand its anatomy and the naming of its parts.

Each part includes a data-part attribute to help identify them in the DOM.

Examples

Default Expanded State

Set the defaultValue prop to specify which item should be expanded by default.

import { Accordion } from '@ark-ui/react/accordion'
import { ChevronDownIcon } from 'lucide-react'

export const Basic = () => {
  return (
    <Accordion.Root defaultValue={['React']}>
      {['React', 'Solid', 'Vue'].map((item) => (
        <Accordion.Item key={item} value={item}>
          <Accordion.ItemTrigger>
            What is {item}?
            <Accordion.ItemIndicator>
              <ChevronDownIcon />
            </Accordion.ItemIndicator>
          </Accordion.ItemTrigger>
          <Accordion.ItemContent>
            {item} is a JavaScript library for building user interfaces.
          </Accordion.ItemContent>
        </Accordion.Item>
      ))}
    </Accordion.Root>
  )
}

Collapsible

Use the collapsible prop to allow the user to collapse all panels.

import { Accordion } from '@ark-ui/react/accordion'
import { ChevronDownIcon } from 'lucide-react'

export const Collapsible = () => {
  return (
    <Accordion.Root defaultValue={['React']} collapsible>
      {['React', 'Solid', 'Vue'].map((item) => (
        <Accordion.Item key={item} value={item}>
          <Accordion.ItemTrigger>
            {item}
            <Accordion.ItemIndicator>
              <ChevronDownIcon />
            </Accordion.ItemIndicator>
          </Accordion.ItemTrigger>
          <Accordion.ItemContent>
            {item} is a JavaScript library for building user interfaces.
          </Accordion.ItemContent>
        </Accordion.Item>
      ))}
    </Accordion.Root>
  )
}

Multiple Panels

Use the multiple prop to allow multiple panels to be expanded simultaneously.

import { Accordion } from '@ark-ui/react/accordion'
import { ChevronDownIcon } from 'lucide-react'

export const Multiple = () => {
  return (
    <Accordion.Root defaultValue={['React']} multiple>
      {['React', 'Solid', 'Vue'].map((item) => (
        <Accordion.Item key={item} value={item}>
          <Accordion.ItemTrigger>
            {item}
            <Accordion.ItemIndicator>
              <ChevronDownIcon />
            </Accordion.ItemIndicator>
          </Accordion.ItemTrigger>
          <Accordion.ItemContent>
            {item} is a JavaScript library for building user interfaces.
          </Accordion.ItemContent>
        </Accordion.Item>
      ))}
    </Accordion.Root>
  )
}

Horizontal Orientation

By default, the Accordion is oriented vertically. Use the orientation prop to switch to a horizontal layout.

import { Accordion } from '@ark-ui/react/accordion'
import { ChevronDownIcon } from 'lucide-react'

export const Horizontal = () => {
  return (
    <Accordion.Root defaultValue={['React']} orientation="horizontal">
      {['React', 'Solid', 'Vue'].map((item) => (
        <Accordion.Item key={item} value={item}>
          <Accordion.ItemTrigger>
            What is {item}?
            <Accordion.ItemIndicator>
              <ChevronDownIcon />
            </Accordion.ItemIndicator>
          </Accordion.ItemTrigger>
          <Accordion.ItemContent>
            {item} is a JavaScript library for building user interfaces.
          </Accordion.ItemContent>
        </Accordion.Item>
      ))}
    </Accordion.Root>
  )
}

Animate Content Size

Use the --height and/or --width CSS variables to animate the size of the content when it expands or closes:

@keyframes slideDown {
  from {
    opacity: 0.01;
    height: 0;
  }
  to {
    opacity: 1;
    height: var(--height);
  }
}

@keyframes slideUp {
  from {
    opacity: 1;
    height: var(--height);
  }
  to {
    opacity: 0.01;
    height: 0;
  }
}

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

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

API Reference

Root

PropDefaultType
asChild
boolean

Use the provided child element as the default rendered element, combining their props and behavior.

For more details, read our Composition guide.
collapsiblefalse
boolean

Whether an accordion item can be closed after it has been expanded.

defaultValue
string[]

The initial value of the accordion when it is first rendered. Use when you do not need to control the state of the accordion.

disabled
boolean

Whether the accordion items are disabled

id
string

The unique identifier of the machine.

ids
Partial<{ root: string item(value: string): string itemContent(value: string): string itemTrigger(value: string): string }>

The ids of the elements in the accordion. Useful for composition.

lazyMountfalse
boolean

Whether to enable lazy mounting

multiplefalse
boolean

Whether multple accordion items can be expanded at the same time.

onFocusChange
(details: FocusChangeDetails) => void

The callback fired when the focused accordion item changes.

onValueChange
(details: ValueChangeDetails) => void

The callback fired when the state of expanded/collapsed accordion items changes.

orientation'vertical'
'horizontal' | 'vertical'

The orientation of the accordion items.

unmountOnExitfalse
boolean

Whether to unmount on exit.

value
string[]

The `value` of the accordion items that are currently being expanded.

Data AttributeValue
[data-scope]accordion
[data-part]root
[data-orientation]The orientation of the accordion

ItemContent

PropDefaultType
asChild
boolean

Use the provided child element as the default rendered element, combining their props and behavior.

For more details, read our Composition guide.
Data AttributeValue
[data-scope]accordion
[data-part]item-content
[data-state]"open" | "closed"
[data-disabled]Present when disabled
[data-focus]Present when focused
[data-orientation]The orientation of the item

ItemIndicator

PropDefaultType
asChild
boolean

Use the provided child element as the default rendered element, combining their props and behavior.

For more details, read our Composition guide.
Data AttributeValue
[data-scope]accordion
[data-part]item-indicator
[data-state]"open" | "closed"
[data-disabled]Present when disabled
[data-focus]Present when focused
[data-orientation]The orientation of the item

Item

PropDefaultType
value
string

The value of the accordion item.

asChild
boolean

Use the provided child element as the default rendered element, combining their props and behavior.

For more details, read our Composition guide.
disabled
boolean

Whether the accordion item is disabled.

Data AttributeValue
[data-scope]accordion
[data-part]item
[data-state]"open" | "closed"
[data-focus]Present when focused
[data-disabled]Present when disabled
[data-orientation]The orientation of the item

ItemTrigger

PropDefaultType
asChild
boolean

Use the provided child element as the default rendered element, combining their props and behavior.

For more details, read our Composition guide.
Data AttributeValue
[data-scope]accordion
[data-part]item-trigger
[data-orientation]The orientation of the item
[data-state]"open" | "closed"

RootProvider

PropDefaultType
value
UseAccordionReturn

asChild
boolean

Use the provided child element as the default rendered element, combining their props and behavior.

For more details, read our Composition guide.
lazyMountfalse
boolean

Whether to enable lazy mounting

unmountOnExitfalse
boolean

Whether to unmount on exit.

Accessibility

This component complies with the Accordion WAI-ARIA design pattern.

Keyboard Support

KeyDescription
Space
When focus is on an trigger of a collapsed item, the item is expanded
Enter
When focus is on an trigger of a collapsed section, expands the section.
Tab
Moves focus to the next focusable element
Shift + Tab
Moves focus to the previous focusable element
ArrowDown
Moves focus to the next trigger
ArrowUp
Moves focus to the previous trigger.
Home
When focus is on an trigger, moves focus to the first trigger.
End
When focus is on an trigger, moves focus to the last trigger.