PushSubscriptionOptions: applicationServerKey property

Baseline 2023

Newly available

Since March 2023, this feature works across the latest devices and browser versions. This feature might not work in older devices or browsers.

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

Note: This feature is available in Web Workers.

The applicationServerKey read-only property of the PushSubscriptionOptions interface contains the public key used by the push server.

Value

A public key your push server uses to send messages to client apps via a push server. This value is part of a signing key pair generated by your application server, and usable with elliptic curve digital signature (ECDSA), over the P-256 curve. If no applicationServerKey member is passed when initialized, it will be set to null.

Examples

In the example below the value of applicationServerKey is printed to the console.

js
navigator.serviceWorker.ready.then((reg) => {
  reg.pushManager.getSubscription().then((subscription) => {
    const options = subscription.options;
    console.log(options.applicationServerKey); // the public key
  });
});

Specifications

Specification
Push API
# dom-pushsubscriptionoptions-applicationserverkey

Browser compatibility

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