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<!doctype html>
<html lang="en">
<head>
<meta charset="utf-8">
<title>Webpush Golang Example</title>
</head>
<body>
<script>
function subscribe() {
navigator.serviceWorker.ready
.then(function(registration) {
const vapidPublicKey = '<YOUR_VAPID_PUBLIC_KEY>';
return registration.pushManager.subscribe({
userVisibleOnly: true,
applicationServerKey: urlBase64ToUint8Array(vapidPublicKey),
});
})
.then(function(subscription) {
console.log(
JSON.stringify({
subscription: subscription,
})
);
})
.catch(err => console.error(err));
}
function urlBase64ToUint8Array(base64String) {
const padding = '='.repeat((4 - (base64String.length % 4)) % 4);
const base64 = (base64String + padding)
.replace(/\-/g, '+')
.replace(/_/g, '/');
const rawData = window.atob(base64);
return Uint8Array.from([...rawData].map(char => char.charCodeAt(0)));
}
if ('serviceWorker' in navigator) {
navigator.serviceWorker.register('service-worker.js');
navigator.serviceWorker.ready
.then(function(registration) {
return registration.pushManager.getSubscription();
})
.then(function(subscription) {
if (!subscription) {
subscribe();
} else {
console.log(
JSON.stringify({
subscription: subscription,
})
);
}
});
}
</script>
</body>
</html>
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