The renotify read-only property of the Notification interface specifies whether the user should be notified after a new notification replaces an old one, as specified in the renotify option of the Notification() constructor.

A boolean value. false is the default; true makes the notification renotify the user.

The following snippet is intended to fire a notification that renotifies the user after it has been replaced; a simple options object is created, and then the notification is fired using the Notification() constructor.

const options = {
  body: "Your code submission has received 3 new review comments.",
  renotify: true,
};

const n = new Notification("New review activity", options);

console.log(n.renotify); // "true"

• Using the Notifications API