Subscribe to WNS and register the channel

gistfile1.js

    function subscribeToPushNotification() {
        var channelOperation = Windows.Networking.PushNotifications
            .PushNotificationChannelManager
            .createPushNotificationChannelForApplicationAsync()
            .then(function (newChannel) {
                channel = newChannel;

                // Insert the new channel URI into the Channel table.
                var client = getMobileServiceClient();
                var channelTable = client.getTable('Channel');
                channelTable.insert({ uri: channel.uri });
            });
    }