Notification: timestamp property

Limited availability

This feature is not Baseline because it does not work in some of the most widely-used browsers.

Secure context: This feature is available only in secure contexts (HTTPS), in some or all supporting browsers.

Experimental: This is an experimental technology
Check the Browser compatibility table carefully before using this in production.

Note: This feature is available in Web Workers.

The timestamp read-only property of the Notification interface returns a number, as specified in the timestamp option of the Notification() constructor.

The notification's timestamp can represent the time, in milliseconds since 00:00:00 UTC on 1 January 1970, of the event for which the notification was created, or it can be an arbitrary timestamp that you want associated with the notification. For example, a timestamp for an upcoming meeting could be set in the future, whereas a timestamp for a missed message could be set in the past.

Value

A number representing a timestamp, given as Unix time in milliseconds.

Examples

The following snippet fires a notification; a simple options object is created, then the notification is fired using the Notification() constructor.

js
const dts = Math.floor(Date.now());

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

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

console.log(n.timestamp); // Logs the timestamp

Specifications

Specification
Notifications API
# dom-notification-timestamp

Browser compatibility

Report problems with this compatibility data on GitHub
desktopmobile
Chrome
Edge
Firefox
Opera
Safari
Chrome Android
Firefox for Android
Opera Android
Safari on iOS
Samsung Internet
WebView Android
WebView on iOS
timestamp
Experimental

Legend

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Full support
Full support
No support
No support
Experimental. Expect behavior to change in the future.
See implementation notes.

See also