HTML Code

<!DOCTYPE html>

<html lang="en">

<head>

  <meta charset="utf-8">

  <title>Rapid click guard</title>

  <style>

    body { font-family: sans-serif; padding: 16px; max-width: 28rem; }

    #panel { height: 120px; background: #ecfdf5; border: 2px solid #10b981; border-radius: 8px; overflow: hidden; }

    button { margin-top: 12px; padding: 8px 16px; }

    #status { margin-top: 12px; padding: 12px; background: #f1f5f9; border-radius: 6px; font-size: 13px; }

  </style>

</head>

<body>

  <div id="panel">Toggle panel content</div>

  <button type="button" id="toggle">Toggle height</button>

  <div id="status">Click rapidly — no stacked animations.</div>

  <script src="https://code.jquery.com/jquery-3.7.1.min.js"></script>

  <script>

    $("#toggle").on("click", function () {

      var $panel = $("#panel");

      $panel.clearQueue().stop();

      $panel.animate({ height: "toggle" }, 300);

      $("#status").text("Toggle started at " + new Date().toLocaleTimeString());

    });

  </script>

</body>

</html>

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jQuery .clearQueue() — rapid click guard (Try It)