PushSubscriptionOptions: applicationServerKey property
Baseline
Widely available
This feature is well established and works across many devices and browser versions. It’s been available across browsers since March 2023.
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.
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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