HTML Code

<!DOCTYPE html>
<html lang="en">
<head>
  <meta charset="utf-8">
  <title>dblclick migration</title>
  <style>
    body { font-family: sans-serif; padding: 16px; }
    #legacy, #modern { padding: 12px 18px; margin: 8px 0; border-radius: 6px; cursor: pointer; color: #fff; display: inline-block; user-select: none; }
    #legacy { background: #b45309; }
    #modern { background: #059669; }
    #out { margin-top: 12px; color: #334155; font-weight: bold; }
  </style>
</head>
<body>
  <div id="legacy">Legacy — .dblclick(fn)</div>
  <div id="modern">Modern — .on("dblclick", fn)</div>
  <div id="out">Double-click either box above.</div>
  <script src="https://code.jquery.com/jquery-3.7.1.min.js"></script>
  <script>
    $("#legacy").dblclick(function() {
      $("#out").text("Legacy: .dblclick(function(){ ... }) — deprecated since jQuery 3.3.");
    });
    $("#modern").on("dblclick", function() {
      $("#out").text("Modern: .on('dblclick', function(){ ... }) — use this for new code.");
    });
  </script>
</body>
</html>

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jQuery .dblclick(fn) vs .on('dblclick', fn) — migration (Try It)