(function () {
  var buttons = document.querySelector('#list');
  buttons.onclick = function (e) {
   var clicks = 0;
   clicks++;
   var target = e.target;
   if (target.tagName = 'BUTTON') {

  var counter = target.closest('li').querySelector('.product-item__counter');
  counter.innerHTML = clicks;

  var product = target.closest('li').querySelector('.product-item__title').innerHTML;
  alert(' You have bought a ' + product);
 }
 };
})();

buttons.onclick = function (e) {
    var clicks = 0;
    clicks++;