function notify0() {
  new Notification('Notify #0', {
    body: 'Body',
    icon: 'https://www.wdgwv.com/logo.png'
  });
}

function notify1() {
  new Notification('Notify #1', {
    icon: 'https://www.wdgwv.com/logo.png'
  });
}

function notify2() {
  new Notification('Notify #2', {
    body: 'Hi!'
  });
}

function notify3() {
  new Notification('Notify #3', 'Body!');
}

function notify4() {
  new Notification('Notify #4');
}