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  <title>ondragenter — inline drop zone</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}.drop-zone{margin-top:1rem;padding:1.25rem;border:2px dashed #cbd5e1;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>ondragenter on drop zone</h1>

  <p>Drag the box into the drop zone. The zone highlights when dragenter fires on the target.</p>

  <div class=drag-box draggable=true>Drag me!</div>

  <div class=drop-zone id=dropZone ondragenter=handleDragEnter(event) ondragleave=handleDragLeave(event)>Drop zone</div>

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



  <script>var dropZone=document.getElementById("dropZone");function handleDragEnter(e){dropZone.classList.add("over"),document.getElementById("status").textContent="dragenter — pointer entered the drop zone boundary."}function handleDragLeave(e){dropZone.contains(e.relatedTarget)||(dropZone.classList.remove("over"),document.getElementById("status").textContent="dragleave — pointer left the drop zone.")}dropZone.addEventListener("dragover",(function(e){e.preventDefault()})),dropZone.addEventListener("drop",(function(e){e.preventDefault(),dropZone.classList.remove("over"),document.getElementById("status").textContent="drop — item released on target."}))</script>

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HTML ondragenter Attribute — Inline Drop Zone
