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<!DOCTYPE html>
<html lang="en">
<head>
  <meta charset="utf-8">
  <title>on eventData demo</title>
  <style>
    body { font-family: sans-serif; padding: 16px; max-width: 480px; }
    p { padding: 10px; border-radius: 6px; cursor: pointer; margin: 8px 0; }
    p.karl { background: #dbeafe; }
    p.addy { background: #dcfce7; }
    #hint { color: #7c2d12; font-weight: bold; margin-top: 12px; }
  </style>
</head>
<body>
  <p class="karl">Click me (bound with name: Karl)</p>
  <p class="addy">Click me (bound with name: Addy)</p>
  <div id="hint">Each paragraph uses the same handler with different eventData.</div>
  <script src="https://code.jquery.com/jquery-3.7.1.min.js"></script>
  <script>
    function greet(event) {
      alert("Hello " + event.data.name);
      $("#hint").text("event.data.name = " + event.data.name);
    }
    $("p.karl").on("click", { name: "Karl" }, greet);
    $("p.addy").on("click", { name: "Addy" }, greet);
  </script>
</body>
</html>

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jQuery .on() with eventData — pass { foo: 'bar' } (Try It)