HTML Code

<!DOCTYPE html>

<html lang=en>

<head>

  <meta charset=UTF-8>

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

  <title>onloadstart — canplay pair</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}audio{display:block;max-width:320px;margin-bottom:.75rem}#status{padding:.75rem 1rem;border-radius:8px;font-size:.875rem;font-weight:600;max-width:420px}#status.loading{background:#fef3c7;border:1px solid #fde68a;color:#92400e}#status.ready{background:#f0fdf4;border:1px solid #bbf7d0;color:#166534}</style>

</head>

<body>

  <h1>Loading → ready</h1>

  <p>Status changes from loading to ready as media events fire.</p>

  <audio id=player controls>

    <source src=/audio/count.mp3 type=audio/mpeg>

  </audio>

  <div id=status class=loading>Initializing…</div>



  <script>var player=document.getElementById("player"),status=document.getElementById("status");player.addEventListener("loadstart",(function(){status.textContent="Loading…",status.className="loading"})),player.addEventListener("canplay",(function(){status.textContent="Ready to play",status.className="ready"}))</script>

</body>

</html>

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HTML onloadstart Attribute — loadstart + canplay