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  <meta charset=UTF-8>

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

  <title>ondragstart — full workflow</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 #cbd5e1;border-radius:8px;background:#fff;cursor:grab;user-select:none;max-width:420px}.drag-box:active{cursor:grabbing}.drop-zone{margin-top:1rem;padding:1.25rem;border:2px dashed #94a3b8;border-radius:8px;background:#f1f5f9;max-width:420px;min-height:3rem;transition:background .15s,border-color .15s}.drop-zone.over{border-color:#3b82f6;background:#eff6ff}.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>dragstart → drop workflow</h1>

  <p>dragstart sets data; drop zone reads it with getData on drop.</p>

  <div class=drag-box draggable=true id=dragSource>Drag me to the zone</div>

  <div class=drop-zone id=dropZone>Drop zone</div>

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



  <script>var source=document.getElementById("dragSource"),zone=document.getElementById("dropZone"),status=document.getElementById("status");source.addEventListener("dragstart",(function(t){t.dataTransfer.setData("text/plain","Item from dragstart"),t.dataTransfer.effectAllowed="move",status.textContent="dragstart — setData(&quot;text/plain&quot;, &quot;Item from dragstart&quot;)."})),zone.addEventListener("dragover",(function(t){t.preventDefault(),zone.classList.add("over")})),zone.addEventListener("dragleave",(function(t){zone.contains(t.relatedTarget)||zone.classList.remove("over")})),zone.addEventListener("drop",(function(t){t.preventDefault(),zone.classList.remove("over");var e=t.dataTransfer.getData("text/plain");status.textContent="drop — getData returned: &quot;"+e+"&quot; (set in dragstart)."}))</script>

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HTML ondragstart Attribute — Full Drag Workflow
