React Accessible Accordion: Setup, Examples & Accessibility

Why use react-accessible-accordion

Accordions are a common pattern for organizing content on the web, but naive implementations often break keyboard navigation, screen reader semantics, or focus order. The react-accessible-accordion library implements the ARIA accordion pattern and exposes a declarative React API so you can build collapsible panels that work for everyone.

Using a focused library reduces accessibility debt: it handles roles, aria-expanded, ID synchronization, and keyboard handling (arrow keys, home/end, tab) for you. That means less bug-fixing later and a better experience for users relying on assistive technology.

It also integrates well with modern React apps — supporting controlled behavior (via props like preExpanded and event handlers), multiple expansions, and custom rendering. If you want a reliable React accordion component that prioritizes accessibility, this library is a pragmatic choice.

Installation and Getting Started

Install the package via npm or yarn. The syntax is familiar to most React projects:

npm install react-accessible-accordion
# or
yarn add react-accessible-accordion

Then import the components you need. The library exposes a small set of composable components: Accordion, AccordionItem, AccordionItemHeading, AccordionItemButton, and AccordionItemPanel. These map closely to the ARIA pattern and make the markup semantic.

For a step-by-step walkthrough, see this getting started tutorial: react-accessible-accordion getting started. The tutorial covers installation, a basic example, and tips for production.

Basic Example

Here’s a minimal, copy-paste React example that demonstrates a single-expand accordion with keyboard accessibility built in. This will render three panels and allow only one to be expanded at a time.

import React from 'react';
import {
  Accordion,
  AccordionItem,
  AccordionItemHeading,
  AccordionItemButton,
  AccordionItemPanel
} from 'react-accessible-accordion';
import 'react-accessible-accordion/dist/fancy-example.css';

export default function FAQAccordion() {
  return (
    
      
        
          What is react-accessible-accordion?
        
        
          
A small React library that builds ARIA-compliant accordions.
        
      
      
    
  );
}

The example imports a CSS file bundled with the package for demo styling. In production you’ll likely replace or extend these styles, but the markup and ARIA attributes remain the same.

Note the uuid prop on items — it helps identify panels for controlled expansion via the preExpanded prop or the onChange callback. The library is flexible: use it as an uncontrolled UI primitive or control it completely from state.

Customization & Styling

Styling an accordion can be as simple as overriding the default CSS classes or as advanced as animating height with CSS transitions or JS. Because each Accordion component maps to intuitive class names, you can target headings, buttons, and panels independently and keep accessibility intact.

Common options include enabling multiple open panels (allowMultipleExpanded), allowing no panels to be open (allowZeroExpanded), and setting a default open panel with preExpanded. For example:

 ... 

To animate panel height smoothly, prefer CSS transitions on max-height with an appropriately large value, or calculate heights in JS on open/close. Keep focus management and ARIA attributes intact during animations so assistive tech reads content correctly.

Accessibility and Keyboard Navigation

Accessibility is the main reason to choose a library like this. The component implements ARIA roles (region, button) and attributes (aria-expanded, aria-controls) automatically, which helps screen readers announce the state of each section.

Keyboard navigation follows the ARIA accordion pattern: Tab moves focus to the next interactive control; Arrow Up/Down (or Left/Right) navigate between accordion headers; Home/End jump to first/last; Enter or Space toggles the focused item. You rarely need custom keyboard handling unless you integrate unusual controls.

Tip: Test with real assistive tech. Use VoiceOver (macOS/iOS) and NVDA or JAWS (Windows) to validate behavior. Also test keyboard-only navigation to ensure focus order, skip links, and visible focus styles are preserved.

Quick checklist for accessibility compliance:

• Each heading contains an interactive button element (not a div).
• Buttons reflect state via aria-expanded and aria-controls.
• IDs used for aria-controls are unique and deterministic (use the uuid prop).

Advanced Patterns and Best Practices

For FAQs and dense content, consider lazy-loading panels to reduce initial bundle cost. Control the accordion from parent state when you need to persist expansion across routes or when integrating analytics events on expand/collapse.

If you manage deep-linking (open an item via URL), sync the active uuid to query parameters and restore state on mount. The library’s controlled API via preExpanded or onChange makes this straightforward.

Finally, keep animation and focus behavior decoupled. Animations should not steal focus or make content inaccessible during transitions. If you implement custom animations, ensure that panels remain accessible to screen readers while closed/animating (use aria-hidden appropriately).

Links and Backlinks

Official repo and docs: react-accessible-accordion.

React accessibility guidance: React accessible UI.

Tutorial reference used earlier: react-accessible-accordion tutorial.

FAQ

Semantic Core