HTML Code

<!DOCTYPE html>

<html lang=en>

<head>

  <meta charset=UTF-8>

  <meta name=viewport content="width=device-width,initial-scale=1">

  <title>tabindex 0 — custom button</title>

  <style>body{font-family:system-ui,sans-serif;margin:0;padding:1.5rem;background:#f8fafc;color:#334155;line-height:1.7}h1{margin:0 0 .75rem;font-size:1.25rem;color:#0f172a}.custom-btn{display:inline-block;margin:.5rem 0;padding:.5rem 1rem;background:#2563eb;color:#fff;border-radius:6px;cursor:pointer;user-select:none}.custom-btn:focus{outline:2px solid #1e40af;outline-offset:2px}.hint{font-size:.8125rem;color:#64748b;margin-top:.75rem}</style>

</head>

<body>

  <h1>tabindex="0" on a div</h1>

  <p>Tab to the control, then press Enter or Space:</p>



  <div class=custom-btn role=button tabindex=0 id=customBtn>Custom button (Tab + Enter/Space)</div>



  <p id=status aria-live=polite></p>



  <script>var btn=document.getElementById("customBtn"),status=document.getElementById("status");function activate(){status.textContent="Activated! (keyboard or click)"}btn.addEventListener("click",activate),btn.addEventListener("keydown",(function(t){"Enter"!==t.key&&" "!==t.key||(t.preventDefault(),activate())}))</script>



  <p class=hint><code>tabindex="0"</code> adds this div to natural tab order. Prefer a real <code>&lt;button&gt;</code> when possible.</p>

</body>

</html>

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HTML tabindex Attribute — tabindex 0 custom control