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  <meta charset=UTF-8>

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

  <title>ondragstart — inline source</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 dashed #94a3b8;border-radius:8px;background:#fff;cursor:grab;user-select:none;max-width:420px}.drag-box:active{cursor:grabbing}.status{margin-top:1rem;padding:.75rem 1rem;background:#eff6ff;border:1px solid #bfdbfe;border-radius:8px;font-size:.8125rem;max-width:420px}</style>

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  <h1>Inline ondragstart</h1>

  <p>Start dragging the box. ondragstart fires once and sets transfer data.</p>

  <div class=drag-box draggable=true ondragstart=handleDragStart(event)>Drag me!</div>

  <div class=status id=status>Waiting for dragstart…</div>



  <script>function handleDragStart(t){t.dataTransfer.setData("text/plain","Hello from dragstart"),t.dataTransfer.effectAllowed="move",document.getElementById("status").textContent="dragstart — setData(&quot;text/plain&quot;, &quot;Hello from dragstart&quot;); effectAllowed = move."}</script>

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HTML ondragstart Attribute — Inline Draggable Source