HTML Code

<!DOCTYPE html>
<html lang="en">
<head>
  <meta charset="utf-8">
  <title>off namespace demo</title>
  <style>
    body { font-family: sans-serif; padding: 16px; max-width: 28rem; }
    #box { padding: 24px; background: #e0e7ff; border-radius: 8px; cursor: pointer; text-align: center; }
    button { margin: 8px 8px 0 0; padding: 8px 14px; cursor: pointer; }
    #log { margin-top: 12px; font-size: 14px; color: #475569; min-height: 3em; }
  </style>
</head>
<body>
  <div id="box">Click or hover me</div>
  <button type="button" id="init">Init plugin</button>
  <button type="button" id="destroy">Destroy (.off)</button>
  <div id="log">Click Init, then interact with the box.</div>
  <script src="https://code.jquery.com/jquery-3.7.1.min.js"></script>
  <script>
    function onPluginEvent(event) {
      $("#log").text(event.type + " — namespace: " + event.namespace);
    }
    function initPlugin() {
      $("#box").off(".myPlugin").on("click.myPlugin mouseenter.myPlugin", onPluginEvent);
      $("#log").text("Plugin initialized — click or hover the box.");
    }
    function destroyPlugin() {
      $("#box").off(".myPlugin");
      $("#log").text("Destroyed — .off('.myPlugin') removed handlers.");
    }
    $("#init").on("click", initPlugin);
    $("#destroy").on("click", destroyPlugin);
  </script>
</body>
</html>

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jQuery event.namespace — .off cleanup (Try It)