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<!DOCTYPE html>

<html lang=en>

<head>

  <meta charset=UTF-8>

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

  <title>onwaiting — inline on video</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}video{display:block;max-width:100%;border-radius:8px;margin-bottom:.75rem}#status{padding:.75rem 1rem;border-radius:8px;font-size:.875rem;font-weight:600;max-width:420px;background:#f1f5f9;border:1px solid #e2e8f0;color:#475569}.hint{font-size:.875rem;color:#64748b;max-width:420px}</style>

</head>

<body>

  <h1>onwaiting on video</h1>

  <p class=hint>Throttle network in DevTools (Slow 3G) and press play — status shows when playback waits for data.</p>



  <video controls width=320 onwaiting=handleWaiting()>

    <source src=/video/count.mp4 type=video/mp4>

    Your browser does not support the video tag.

  </video>

  <p id=status aria-live=polite>Ready — press play</p>



  <script>var video=document.querySelector("video"),status=document.getElementById("status");function handleWaiting(){status.textContent="Buffering — waiting for media data…",status.style.background="#eff6ff",status.style.borderColor="#bfdbfe",status.style.color="#1e40af",status.setAttribute("aria-busy","true")}video.addEventListener("playing",(function(){status.textContent="Playing",status.style.background="#f0fdf4",status.style.borderColor="#bbf7d0",status.style.color="#166534",status.removeAttribute("aria-busy")}))</script>

</body>

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HTML onwaiting Attribute — inline handler on video