Skip to content

Accordion API

API reference docs for the React Accordion component. Learn about the props, CSS, and other APIs of this exported module.

Demos

For examples and details on the usage of this React component, visit the component demo pages:

Import

import Accordion from '@mui/material/Accordion';
// or
import { Accordion } from '@mui/material';
You can learn about the difference by reading this guide on minimizing bundle size.

Props

Props of the Paper component are also available.

NameTypeDefaultDescription
children*node
The content of the component.
classesobject
Override or extend the styles applied to the component. See CSS API below for more details.
defaultExpandedboolfalse
If true, expands the accordion by default.
disabledboolfalse
If true, the component is disabled.
disableGuttersboolfalse
If true, it removes the margin between two expanded accordion items and the increase of height.
expandedbool
If true, expands the accordion, otherwise collapse it. Setting this prop enables control over the accordion.
onChangefunc
Callback fired when the expand/collapse state is changed.

Signature:
function(event: React.SyntheticEvent, expanded: boolean) => void
event: The event source of the callback. Warning: This is a generic event not a change event.
expanded: The expanded state of the accordion.
squareboolfalse
If true, rounded corners are disabled.
sxArray<func
| object
| bool>
| func
| object
The system prop that allows defining system overrides as well as additional CSS styles. See the `sx` page for more details.
TransitionComponentelementTypeCollapse
The component used for the transition. Follow this guide to learn more about the requirements for this component.
TransitionPropsobject
Props applied to the transition element. By default, the element is based on this Transition component.

The ref is forwarded to the root element.

Inheritance

While not explicitly documented above, the props of the Paper component are also available on Accordion. You can take advantage of this to target nested components.

Theme default props

You can use MuiAccordion to change the default props of this component with the theme.

CSS

The following class names are useful for styling with CSS (the state classes are marked).
To learn more, visit the component customization page.

Rule nameGlobal classDescription
root.MuiAccordion-rootStyles applied to the root element.
rounded.MuiAccordion-roundedStyles applied to the root element unless square={true}.
expanded
STATE
.Mui-expandedState class applied to the root element if expanded={true}.
disabled
STATE
.Mui-disabledState class applied to the root element if disabled={true}.
gutters.MuiAccordion-guttersStyles applied to the root element unless disableGutters={true}.
region.MuiAccordion-regionStyles applied to the region element, the container of the children.

You can override the style of the component using one of these customization options: