ExemploSeção

HTML

<!-- Learn about this code on MDN: https://developer.mozilla.org/pt-BR/docs/Web/API/notificacoes -->

<button onclick="notifyMe()">Notifique me!</button>

JavaScript

function notifyMe() {
  // Verifica se o browser suporta notificações
  if (!("Notification" in window)) {
    alert("Este browser não suporta notificações de Desktop");
  }

  // Let's check whether notification permissions have already been granted
  else if (Notification.permission === "granted") {
    // If it's okay let's create a notification
    var notification = new Notification("Hi there!");
  }

  // Otherwise, we need to ask the user for permission
  else if (Notification.permission !== 'denied') {
    Notification.requestPermission(function (permission) {
      // If the user accepts, let's create a notification
      if (permission === "granted") {
        var notification = new Notification("Hi there!");
      }
    });
  }

  // At last, if the user has denied notifications, and you 
  // want to be respectful there is no need to bother them any more.
}Notification.requestPermission();function spawnNotification(corpo,icone,titulo) {
  var opcoes = {
      body: corpo,
      icon: icone
  }
  var n = new Notification(titulo,opcoes);
}