HTML Code

<!DOCTYPE html>
<html lang="en">
<head>
  <meta charset="utf-8">
  <title>ariaCurrent MDN</title>
</head>
<body>
  <nav>
    <ul>
      <li><a id="link-home" href="/" aria-current="page">Home</a></li>
      <li><a href="/about">About</a></li>
      <li><a href="/contact">Contact</a></li>
    </ul>
  </nav>
  <pre id="out"></pre>
  <script>
    var el = document.getElementById("link-home");
    var lines = [el.ariaCurrent];
    el.ariaCurrent = "false";
    lines.push(el.ariaCurrent);
    document.getElementById("out").textContent = lines.join("\n");
  </script>
</body>
</html>

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Element.ariaCurrent — MDN clear (Try It)