HTML Code

<!DOCTYPE html>

<html lang=en>

<head>

  <meta charset=UTF-8>

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

  <title>ondrag — dynamic</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}.drag-box{display:inline-block;padding:1rem 1.25rem;border:2px solid #cbd5e1;border-radius:8px;background:#fff;cursor:grab;user-select:none;max-width:420px}.drag-box:active{cursor:grabbing}.log{margin-top:1rem;padding:.75rem 1rem;background:#fef9c3;border:1px solid #fde047;border-radius:8px;font-size:.8125rem;max-width:420px}</style>

</head>

<body>

  <h1>Dynamic ondrag</h1>

  <p>Drag the box below. The handler was assigned with JavaScript.</p>

  <div class=drag-box id=dynamicDragElement draggable=true>Dynamic drag target</div>

  <div class=log id=log>Drag the box above to see status updates.</div>



  <script>var count=0;document.getElementById("dynamicDragElement").ondrag=function(){count+=1,document.getElementById("log").textContent="Dynamic ondrag handler: drag event #"+count+" while moving."}</script>

</body>

</html>

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HTML ondrag Attribute — Dynamic Handler