HTML Code

<!DOCTYPE html>
<html lang="en">
<head>
  <meta charset="utf-8">
  <title>branch on namespace</title>
  <style>
    body { font-family: sans-serif; padding: 16px; max-width: 28rem; }
    button { margin-right: 8px; padding: 8px 14px; cursor: pointer; }
    #toast { margin-top: 14px; padding: 12px; border-radius: 8px; font-weight: bold; }
    #toast.ok { background: #d1fae5; color: #065f46; }
    #toast.err { background: #fee2e2; color: #991b1b; }
  </style>
</head>
<body>
  <button type="button" id="ok">Trigger success</button>
  <button type="button" id="bad">Trigger error</button>
  <div id="toast">Click a button.</div>
  <script src="https://code.jquery.com/jquery-3.7.1.min.js"></script>
  <script>
    function onNotify(event) {
      if (event.namespace === "success") {
        $("#toast").text("Saved! (namespace: " + event.namespace + ")").removeClass("err").addClass("ok");
      } else if (event.namespace === "error") {
        $("#toast").text("Failed. (namespace: " + event.namespace + ")").removeClass("ok").addClass("err");
      }
    }
    $(document).on("notify.success notify.error", onNotify);
    $("#ok").on("click", function () { $(document).trigger("notify.success"); });
    $("#bad").on("click", function () { $(document).trigger("notify.error"); });
  </script>
</body>
</html>

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jQuery event.namespace — notify success/error (Try It)