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  <title>ondragend — vs drop &amp; event sequence</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}ul{margin:1rem 0 0;padding-left:1.25rem;font-size:.8125rem;max-width:420px}li{margin-bottom:.35rem}.start{color:#15803d;font-weight:600}.drag{color:#1d4ed8;font-weight:600}.end{color:#b45309;font-weight:600}.drop{color:#7c3aed;font-weight:600}</style>

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  <h1>dragend vs drop &amp; event sequence</h1>

  <p>Drag the box onto the drop zone or release elsewhere. dragend fires on the source; drop fires on the target.</p>

  <div class=drag-box id=box draggable=true>Drag me, then release.</div>

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

  <ul id=log></ul>



  <script>var box=document.getElementById("box"),target=document.getElementById("target"),log=document.getElementById("log"),dragCount=0,dragLine=null;function add(e,t){var n=document.createElement("li");t&&(n.className=t),n.textContent=e,log.appendChild(n),log.children.length>12&&log.removeChild(log.firstChild)}box.addEventListener("dragstart",(function(){dragCount=0,dragLine=null,add("dragstart (source, once)","start")})),box.addEventListener("drag",(function(){dragCount+=1,dragLine||((dragLine=document.createElement("li")).className="drag",log.appendChild(dragLine)),dragLine.textContent="drag (source, "+dragCount+" times while moving)"})),box.addEventListener("dragend",(function(e){add("dragend (source, once) — dropEffect: "+e.dataTransfer.dropEffect,"end")})),target.addEventListener("dragover",(function(e){e.preventDefault()})),target.addEventListener("drop",(function(){add("drop (target, only if released on zone)","drop")}))</script>

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HTML ondragend Attribute — dragend vs drop & event sequence
