firebase-webapp/client.html at master · ferry99/firebase-webapp · GitHub

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<script src="https://www.gstatic.com/firebasejs/4.6.2/firebase-app.js"></script>
<script src="https://www.gstatic.com/firebasejs/4.6.2/firebase-auth.js"></script>
<script src="https://www.gstatic.com/firebasejs/4.6.2/firebase-database.js"></script>
<script src="https://www.gstatic.com/firebasejs/4.6.2/firebase-firestore.js"></script>
<script src="https://www.gstatic.com/firebasejs/4.6.2/firebase-messaging.js"></script>

<script>
  // Initialize Firebase
  var config = {
    apiKey: "AIzaSyA9cmPxunLb6okMBEb9hoyYY3KyDhfr_h0",
    authDomain: "push-notification-12490.firebaseapp.com",
    databaseURL: "https://push-notification-12490.firebaseio.com",
    projectId: "push-notification-12490",
    storageBucket: "push-notification-12490.appspot.com",
    messagingSenderId: "5617551821"
  };
  firebase.initializeApp(config);

  const messaging = firebase.messaging();

  messaging.requestPermission()
.then(function() {
  console.log('Notification permission granted. 123');
  // TODO(developer): Retrieve an Instance ID token for use with FCM.
  // ...

  messaging.getToken()
  .then(function(currentToken) {
      if (currentToken) {
          console.log(currentToken);
      } else {
          console.log('No Instance ID token available. Request permission to generate one.');
      }
  })
  .catch(function(err) {
      console.log('An error occurred while retrieving token. ', err);
  });
})
.catch(function(err) {
  console.log('Unable to get permission to notify.', err);
});

</script>