Why pick react-accessible-accordion for collapsible content?

When building collapsible content in React, you can reach for a lot of libraries — but not all treat accessibility as a first-class citizen. react-accessible-accordion centers on ARIA roles, attributes, and keyboard interactions so that your FAQ accordion or collapsible panels behave predictably for screen reader users and keyboard-only users.

It’s small, dependency-free, and maps directly to the common accordion pattern: a list of headings (buttons) that expand or collapse corresponding content panels. Because of this focus, it’s a great choice for accessible UIs where semantics matter—like documentation pages, knowledge bases, or product FAQs.

The library also provides clear hooks for customization: you can control which items are expanded by default, allow multiple panels to be open, or use your own CSS classes to match your design system. Combined, these traits make it an excellent React accordion component for both prototypes and production systems.

Installation and getting started

Install the package quickly via npm or yarn. This is the fastest path to a functioning React accordion component in your project. Run one of these in your project root:

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

Once installed, import the components you need. The typical minimal setup uses Accordion, AccordionItem, AccordionItemHeading, AccordionItemButton, and AccordionItemPanel. This composition maps to ARIA best practices, making it easier to support assistive technologies without extra plumbing.

Here’s a minimal example to get you started. Drop this into a component and style the classes, or swap in your own elements.

import {
  Accordion,
  AccordionItem,
  AccordionItemHeading,
  AccordionItemButton,
  AccordionItemPanel
} from 'react-accessible-accordion';

function FAQ() {
  return (
    <Accordion allowZeroExpanded>
      <AccordionItem>
        <AccordionItemHeading>
          <AccordionItemButton>What is react-accessible-accordion?</AccordionItemButton>
        </AccordionItemHeading>
        <AccordionItemPanel>
          <p>A simple, ARIA-friendly accordion component for React.</p>
        </AccordionItemPanel>
      </AccordionItem>
    </Accordion>
  );
}

For a step-by-step tutorial and a practical walkthrough, check this community guide on getting started with react-accessible-accordion: getting started with react-accessible-accordion.

Core concepts and API

The library exposes a few composable components that reflect the WAI-ARIA accordion pattern. Use Accordion as the container, AccordionItem for each panel, AccordionItemHeading to wrap the heading, AccordionItemButton as the actionable button, and AccordionItemPanel for the collapsible content. This separation keeps logic explicit and markup predictable.

Key props to know: allowMultiple allows multiple panels open, allowZeroExpanded lets all panels be closed, preExpanded accepts an array of ids to control the initial state, and onChange provides a callback when expansion changes. These props let you model everything from single-panel disclosure to multi-select accordion groups.

Internally, the component manages focus and ARIA attributes for you: AccordionItemButton receives proper aria-expanded and aria-controls attributes, and AccordionItemPanel gets role=”region” and id that matches the button’s aria-controls. This saves you time and reduces accessibility regressions compared to hand-rolled solutions.

Accessibility and keyboard navigation

Accessibility is the library’s raison d’être. By following WAI-ARIA Authoring Practices, react-accessible-accordion ensures screen readers announce the relationship between the button and the panel and that the expanded/collapsed state is properly exposed. That creates predictable behavior for users who rely on assistive tech.

Keyboard navigation follows common expectations: the AccordionItemButton elements support focus, and arrow key behavior can be implemented or configured depending on the wrapper you choose. Out of the box, buttons are plain buttons with correct aria-expanded and focusability; you can add roving focus behavior or custom key handlers if you need advanced navigation.

Useful keyboard patterns to document in your UI (so users know what to expect):

• Enter or Space toggles the panel
• Tab moves focus through interactive controls
• ArrowUp/ArrowDown — optional roving focus between accordion headings (implement if needed)

If you need extra keyboard features (like full roving focus), add a small wrapper that listens for arrow keys and moves focus between AccordionItemButton elements. That keeps accessibility logic explicit while preserving the library’s ARIA mappings.

Customization, styling, and patterns

Styling is intentionally left to you: the library applies a few default class names (e.g., react-accessible-accordion__item, __button, __panel) so you can target them in CSS or replace classes with your design system tokens. For full control, render your own components inside the provided wrappers and apply styles via CSS-in-JS or utility classes.

Common customization patterns include: controlled expansion (using onChange + state), lazy-loading panel content only when expanded, animating height with CSS transitions, and synchronizing accordion state with URL fragments for deep linking. Each pattern is supported because the core components only handle semantics and state—they don’t impose a presentation model.

Example: lazy-load a heavy panel when opened. Use onChange to detect expanded items and fetch content, or render children conditionally inside AccordionItemPanel based on whether that item’s id is in the expanded state array. This yields better performance for large FAQ pages or documentation sites.

Examples and common pitfalls

Examples you’ll often reuse: FAQ accordion (single or multi-expand), navigation-style accordion for sidebars, and disclosure panels inside forms. For FAQs, allowZeroExpanded and allowMultiple can be helpful depending on whether you want users to keep multiple answers visible.

Common pitfalls: (1) Styling only the button but forgetting to style the panel transition, leading to layout jumps; (2) manually toggling aria attributes in addition to using the library (double-handling state creates inconsistencies); (3) expecting built-in arrow-key roving—implement if required.

For a concrete example and usage tips, see the npm package page and the GitHub repo for demos and issues: react-accessible-accordion installation and react-accessible-accordion example. Those resources provide additional snippets, known issues, and implementation examples you can adopt.