Baseline 2023
Newly available
Secure context: This feature is available only in secure contexts (HTTPS), in some or all supporting browsers.
Note: This feature is only available in Service Workers.
The data read-only property of the PushEvent interface returns a reference to a PushMessageData object containing data sent to the PushSubscription.
A PushMessageData object or null if no data member is passed when the event instance initialized.
The following example takes data from a PushEvent and displays it on all of the service workers' clients.
self.addEventListener("push", (event) => {
if (!(self.Notification && self.Notification.permission === "granted")) {
return;
}
const data = event.data?.json() ?? {};
const title = data.title || "Something Has Happened";
const message =
data.message || "Here's something you might want to check out.";
const icon = "images/new-notification.png";
const notification = new Notification(title, {
body: message,
tag: "simple-push-demo-notification",
icon,
});
notification.addEventListener("click", () => {
clients.openWindow(
"https://example.blog.com/2015/03/04/something-new.html",
);
});
});
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