const defaultDuration = 15*60

function Item(name/*, start, duration, end*/) {
  this.name = name;
  // this.start = start;
  // this.ducation = duration;
  // this.end = end;
}

function appendItem(item) {
  let text = '<li><p>'+item.name+'</p></li>';
  itemList.insertAdjacentHTML('beforeend', text);
}