files/en-us/web/api/notification/data/index.md
{{APIRef("Web Notifications")}}{{securecontext_header}} {{AvailableInWorkers}}
The data read-only property of the
{{domxref("Notification")}} interface returns a structured clone of the notification's
data, as specified in the data option of the
{{domxref("Notification.Notification","Notification()")}} constructor.
The notification's data can be any arbitrary data that you want associated with the notification.
A structured clone.
The following snippet fires a notification; a simple options object is
created, then the notification is fired using the Notification()
constructor.
const options = {
body: "Your code submission has received 3 new review comments.",
data: {
url: "https://example.com/review/12345",
status: "open",
},
};
const n = new Notification("New review activity", options);
console.log(n.data); // Logs the data object
{{Specifications}}
{{Compat}}