Accessible SEO-friendly Accordion In JavaScript

About Vanilla Js Accordion

Accessible accordion widget with less than 1kb of vanilla JavaScript and 3 lines of CSS. Style as you please!

Usage

Include the .min CSS and JavaScript files from the dist folder and use or refer to the markup in vanilla-js-accordion.html

Walkthrough

<!-- Aria-label tells visually impaired users they are using an accordion -->
<ul aria-label="Accordion Control Group Buttons">

    <!-- Accordion 'sections' are stored in list items so visually impaired users get a count -->
    <li>

        <!-- Buttons are tabbable and accessible to screen readers. The aria labels give further info to screen readers about content and state of the UI -->
        <button aria-controls="accordion-content-1" aria-expanded="false" class="accordion-controls__button"
            title="Show content">Show me some Lorem!</button>

        <!-- Aria-hidden makes the content neither visible or comprehensible when set to true
             We also use an id on the content div which matches the button's aria-controls value-->
        <div aria-hidden="true" id="accordion-content-1" class="accordion-controls__content">
            <!-- You're not just limited to paragraph tags here - use some semantic markup! -->
            <p>
                Lorem ipsum dolor sit amet consectetur adipisicing elit.
            </p>
        </div>

    </li>

    <!-- as you can see, the aria-controls and accordion-controls__content id are unique -->
    <li>
        <button aria-controls="accordion-content-2" aria-expanded="false" class="accordion-controls__button"
            title="Show content">Show me more Lorem!</button>
        <div aria-hidden="true" id="accordion-content-2" class="accordion-controls__content">
            <p>
                Lorem ipsum dolor sit amet consectetur adipisicing elit.
            </p>
        </div>
    </li>

</ul>

Download Details:

Author: carl-evans

GitHub: https://github.com/carl-evans/accordion

#javascript #programming