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<!DOCTYPE html>
<html lang="en">
<head>
  <meta charset="utf-8">
  <title>stopPropagation vs immediate</title>
  <style>
    body { font-family: sans-serif; padding: 16px; max-width: 32rem; }
    #btn { padding: 10px 18px; cursor: pointer; }
    pre { margin-top: 12px; background: #1e293b; color: #e2e8f0; padding: 12px; border-radius: 6px; font-size: 13px; white-space: pre-wrap; }
  </style>
</head>
<body>
  <button type="button" id="btn">Click me</button>
  <pre id="log">Click the button.</pre>
  <script src="https://code.jquery.com/jquery-3.7.1.min.js"></script>
  <script>
    $("#btn").on("click", function (event) {
      event.stopPropagation();
      $("#log").text(
        "immediate stopped? " + event.isImmediatePropagationStopped() + "\n" +
        "propagation stopped? " + event.isPropagationStopped()
      );
    });
    $("#btn").on("click", function () {
      $("#log").append("\nSecond handler still ran");
    });
  </script>
</body>
</html>

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jQuery event.isImmediatePropagationStopped() — stopPropagation compare (Try It)