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CSS

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JavaScript

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Babel includes JSX processing.

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HTML 

              
                <div class="content-container">
  <h2>Frequently Asked Questions</h2>
  <div class="eqd-accordion">
    <h3 class="eqd-accordion__heading">
      <button
        type="button"
        class="eqd-accordion__button"
        aria-expanded="true"
        aria-controls="a1"
      >
        Why should accordions be accessible?
      </button>
    </h3>
    <div id="a1" class="eqd-accordion__content">
      <p>
        Accordions on your website include important information. Everyone should be able to access this information, even if they do not use a typical keyboard and mouse to browser your website. Many laws around the world also require websites to be accessible, including accordion components.
      </p>
    </div>
    <h3 class="eqd-accordion__heading">
      <button
        type="button"
        class="eqd-accordion__button"
        aria-expanded="false"
        aria-controls="a2"
      >
        Do accordions need buttons?
      </button>
    </h3>
    <div id="a2" class="eqd-accordion__content" hidden>
      <p>
        Yes, HTML buttons are necessary for screen reader and keyboard only users to be able to open and close the accordion.
      </p>
    </div>
    <h3 class="eqd-accordion__heading">
      <button
        type="button"
        class="eqd-accordion__button"
        aria-expanded="false"
        aria-controls="a3"
      >
        Do accordions need headings?
      </button>
    </h3>
    <div id="a3" class="eqd-accordion__content" hidden>
      <p>
        Yes. Headings are very important for screen reader users to be able to understand and quickly navigate the content. All button text should be contained in a heading tag of the appropriate level (H2, H3, H4, etc.) as makes sense in the outline of your page. Adding a button role to a heading removes the heading from the heading list in screen readers, which is an accessibility failure. You need both a heading tag wrapped around a button tag.
      </p>
    </div>
     <h3 class="eqd-accordion__heading">
      <button
        type="button"
        class="eqd-accordion__button"
        aria-expanded="false"
        aria-controls="a4"
      >
        Can I use the details element instead?
      </button>
    </h3>
    <div id="a4" class="eqd-accordion__content" hidden>
      <p>
        No. The HTML details element is only intended for standalone use and not as a grouped element. It does not support the use of headings and thus cannot be used in place of an accordion.
      </p>
    </div>
    <h3 class="eqd-accordion__heading">
      <button
        type="button"
        class="eqd-accordion__button"
        aria-expanded="false"
        aria-controls="a5"
      >
        Where else can I learn about coding accessible accordions?
      </button>
    </h3>
    <div id="a5" class="eqd-accordion__content" hidden>
      <p>
        You can learn more about coding accessible accordions on the Equalize Digital blog, <a href="https://equalizedigital.com/how-to-code-accessible-accordions/">How to Code Accessible Accordions.</a>
      </p>
    </div>
  </div>
</div>
!

CSS 

              
                .content-container {
  max-width: 740px;
  margin: 20px auto;
}

h2 {
  font-size: 30px;
  font-weight: 700;
}

.eqd-accordion__heading {
  margin-bottom: 0;
}

.eqd-accordion__button {
    border: 0;
    border-radius: 0;
    box-shadow: none;
    justify-content: normal;
    text-align: left;
    padding: 0;
    color: #1b1b1b;
    background-color: #f0f0f0;
    background-image: url(https://equalizedigital.com/wp-content/uploads/2024/07/minus.svg), linear-gradient(transparent, transparent);
    background-repeat: no-repeat;
    background-position: right 1.25rem center;
    background-size: 1.5rem;
    cursor: pointer;
    display: inline-block;
    font-weight: 700;
    margin: 0;
    padding: 1rem 3.5rem 1rem 1.25rem;
    text-decoration: none;
    width: 100%;
}

.eqd-accordion__button[aria-expanded=false], 
.eqd-accordion__button[aria-expanded=false]:hover {
    background-image: url(https://equalizedigital.com/wp-content/uploads/2024/07/plus.svg), linear-gradient(transparent, transparent);
    background-repeat: no-repeat;
}

.eqd-accordion__button[aria-expanded=false] {
    background-size: 1.5rem;
}

.eqd-accordion__content {
    color: #1b1b1b;
    background-color: #fff;
    margin-top: 0;
    overflow: auto;
    padding: 1rem 1.25rem calc(1rem - .25rem);
    font-size: 1.06rem;
    line-height: 1.5;
    border-bottom: .25rem solid #f0f0f0;
    border-left: .25rem solid #f0f0f0;
    border-right: .25rem solid #f0f0f0;
}
!

JS 

              
                document.addEventListener("DOMContentLoaded", function() {
  const accordionButtons = document.querySelectorAll(".eqd-accordion__button");

  accordionButtons.forEach(button => {
    button.addEventListener("click", function() {
      const isExpanded = button.getAttribute("aria-expanded") === "true";
      const contentId = button.getAttribute("aria-controls");
      const content = document.getElementById(contentId);

      // Collapse all accordions
      accordionButtons.forEach(btn => {
        const contentToHide = document.getElementById(btn.getAttribute("aria-controls"));
        btn.setAttribute("aria-expanded", "false");
        if (contentToHide) {
          contentToHide.setAttribute("hidden", "");
        }
      });

      // If the clicked accordion was not expanded, expand it
      if (!isExpanded) {
        button.setAttribute("aria-expanded", "true");
        content.removeAttribute("hidden");
      }
    });
  });
});
!
999px

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