[react-accessible-accordion](https://springload.github.io/react-accessible-accordion/) [![npm](https://img.shields.io/npm/v/react-accessible-accordion.svg?style=flat-square)](https://www.npmjs.com/package/react-accessible-accordion) [![Accessibility status](https://img.shields.io/badge/a11y-tested-brightgreen.svg)](http://wave.webaim.org/report#/https://springload.github.io/react-accessible-accordion/) ========= ## ⚠️ Project status In most cases, you no longer need a JS library like this to render fully functional, accessible accordions. For that reason, **this project is no longer maintained**. This is because native [HTML Disclosure](https://developer.mozilla.org/en-US/docs/Web/HTML/Reference/Elements/summary) (aka `

`/`) elements are now [widely supported](https://caniuse.com/details). Native disclosures offer several advantages over any JS-based solutions. For instance: - Because there is no JS to download/parse, they are far more performant. - They are framework-agnostic, and will work the same way whether you're using React, [other framework], or plain old HTML. - Collapsed content can still be found via find-on-page (ctrl/command+f) in supporting browsers, including Chrome. ## Demo [Try a demo now](https://springload.github.io/react-accessible-accordion/). ## Usage First, grab the package from npm: ```sh npm install --save react-accessible-accordion ``` Then, import the editor and use it in your code. Here is a [basic example](https://springload.github.io/react-accessible-accordion/): ```jsx import React from 'react'; import { Accordion, AccordionItem, AccordionItemHeading, AccordionItemButton, AccordionItemPanel, } from 'react-accessible-accordion'; // Demo styles, see 'Styles' section below for some notes on use. import 'react-accessible-accordion/dist/fancy-example.css'; export default function Example() { return ( What harsh truths do you prefer to ignore?

Exercitation in fugiat est ut ad ea cupidatat ut in cupidatat occaecat ut occaecat consequat est minim minim esse tempor laborum consequat esse adipisicing eu reprehenderit enim.

Is free will real or just an illusion?

In ad velit in ex nostrud dolore cupidatat consectetur ea in ut nostrud velit in irure cillum tempor laboris sed adipisicing eu esse duis nulla non.

); } ``` ### Styles We strongly encourage you to write your own styles for your accordions, but we've published the styles used on our demo page to help you get up and running: ```js import 'react-accessible-accordion/dist/fancy-example.css'; ``` We recommend that you copy them into your own app and modify them to suit your needs, particularly if you're using your own `className`s. ## Component API ### Accordion #### allowMultipleExpanded : `boolean` [*optional*, default: `false`] Don't autocollapse items when expanding other items. #### allowZeroExpanded : `boolean` [*optional*, default: `false`] Allow the only remaining expanded item to be collapsed. #### preExpanded: `string[]` [_optional_, default: `[]`] Accepts an array of strings and any `AccordionItem` whose `uuid` prop matches any one of these strings will be expanded on mount. #### className : `string` [*optional*, default: `'accordion'`] Class(es) to apply to element. #### onChange : `(string[]) => void` [*optional*] Callback which is invoked when items are expanded or collapsed. Gets passed `uuid`s of the currently expanded `AccordionItem`s. --- ### AccordionItem #### className : `string` [*optional*, default: `accordion__item`] Class(es) to apply to element. #### uuid : `string|number` [*optional*] Recommended for use with `onChange`. Will be auto-generated if not provided. #### dangerouslySetExpanded: `boolean` [*optional*] Enables external control of the expansion. > Warning: This may impact accessibility negatively, use at your own risk --- ### AccordionItemHeading #### className : `string` [*optional*, default: `'accordion__heading'`] Class(es) to apply to the 'heading' element. #### aria-level : `number` [*optional*, default: `3`] Semantics to apply to the 'heading' element. A value of `1` would make your heading element hierarchically equivalent to an `

` tag, and likewise a value of `6` would make it equivalent to an `

` tag. ### AccordionItemButton #### className : `string` [optional, default: `'accordionbutton'`] Class(es) to apply to the 'button' element. --- ### AccordionItemPanel #### className : `string` [optional, default: `'accordionpanel'`] Class(es) to apply to element. #### region: `boolean` Make the element have a region role. --- ### AccordionItemState #### children : `({ expanded: boolean, disabled: boolean }): JSX.Element` [required] --- ## Helpers ### resetNextUuid : `(): void` Resets the internal counter for Accordion items' identifiers (including `id` attributes). For use in test suites and isomorphic frameworks. --- ## Accessibility Best-Practice Authoring an 'accordion' component to the [WAI ARIA spec](https://www.w3.org/TR/wai-aria-practices-1.1/#accordion) can be complex, but `React Accessible Accordion` does most of the heavy lifting for you, including: - Applying appropriate aria attributes (`aria-expanded`, `aria-controls`, `aria-disabled`, `aria-hidden` and `aria-labelledby`). - Applying appropriate `role` attributes (`button`, `heading`, `region`). - Applying appropriate `tabindex` attributes. - Applying keyboard interactivity ('space', 'end', 'tab', 'up', 'down', 'home' and 'end' keys). However, there's still a couple of things you need to keep in mind to remain spec-compliant: - Only ever use [phrasing content](https://developer.mozilla.org/en-US/docs/Web/Guide/HTML/Content_categories#Phrasing_content) inside of your `AccordionItemHeading` component. If in doubt, use text only. - Always provide an `aria-level` prop to your `AccordionItemHeading` component, _especially_ if you are nesting accordions. This attribute is a signal used by assistive technologies (eg. screenreaders) to determine which heading level (ie. `h1`-`h6`) to treat your heading as. If you have any questions about your implementation, then please don't be afraid to get in touch via our [issues](https://github.com/springload/react-accessible-accordion/issues). ## FAQs ### React 18? RAA supports React 18, and the new out-of-order streaming feature. See the CHANGELOG for details. ### Which design patterns does this component aim to solve? Those described by the WAI ARIA spec's description of an 'accordion': > An accordion is a vertically stacked set of interactive headings that each > contain a title, content snippet, or thumbnail representing a section of > content. The headings function as controls that enable users to reveal or hide > their associated sections of content. Accordions are commonly used to reduce > the need to scroll when presenting multiple sections of content on a single > page. ### Which design patterns does this component NOT aim to solve? Components which are "accordion-like" but do not match the WAI ARIA spec's description, as written above. By "accordion-like", we mean components which have collapsible items but require bespoke interactive mechanisms in order to expand, collapse and 'disable' them. This includes (but is not limited to) multi-step forms, like those seen in many cart/checkout flows, which we believe require (other) complex markup in order to be considered 'accessible'. This also includes disclosure widgets. ### How do I disable an item? See "Which design patterns does this component NOT aim to solve?". ## Browser Support Supported browser / device versions: | Browser | Device/OS | Version | | ------------- | --------- | ------- | | Mobile Safari | iOS | latest | | Chrome | Android | latest | | IE | Windows | 11 | | MS Edge | Windows | latest | | Chrome | Desktop | latest | | Firefox | Desktop | latest | | Safari | OSX | latest |

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