JSConfAR ticket sold notification

jsconfar.js

function sendNotification(data){
  new Notification("Entrada Vendida!", {icon: "http://i.imgur.com/PDqr3ZK.png", body: data.availableRegularTickets + "\n"+data.lastBuyerName.substring(0, 30).ucwords()});
}

function ticketSold(data) {
  // Let's check if the user is okay to get some notification
  if (Notification.permission === "granted") {
    // If it's okay let's create a notification
    sendNotification(data);
  }

  // Otherwise, we need to ask the user for permission
  // Note, Chrome does not implement the permission static property
  // So we have to check for NOT 'denied' instead of 'default'
  else if (Notification.permission !== 'denied') {
    Notification.requestPermission(function (permission) {
      // Whatever the user answers, we make sure we store the information
      if (!('permission' in Notification)) {
        Notification.permission = permission;
      }

      // If the user is okay, let's create a notification
      if (permission === "granted") {
        sendNotification(data);
      }
    });
  }
}

var socket = io.connect('https://tickets.jsconfar.com');
socket.on('availability', ticketSold);
console.log('attached');