Simple vanilla JavaScript event listener not working

Question

I have written a simple JavaScript event listener for a JavaScript program I am currently building- I have written a simple modal which opens and closes on click but the on click does not seem to work. I am looping through JSON to display items for an eCommerce project as I am creating a new div for every new image could this be as to why the modal feature is not working?

var parentDiv = document.getElementsByClassName('items')

for (let i = 0; i < garments.hits.length; i++) {
  const child = document.createElement('div')
  child.setAttribute('class', 'style')
  const image = document.createElement('img')
  if (garments.hits[i].image) {
    image.setAttribute('src', garments.hits[i].image.link)
    image.setAttribute('alt', garments.hits[i].image.alt)
  }

  child.appendChild(image)
  parentDiv[0].appendChild(child)

  image.style.cssText = "height:550px; width:400px; cursor: pointer;"

  // function for modal bit 
  var modal = document.getElementById('simpleModal');
  // get open modal 
  var modalbtn = document.getElementsByClassName('style');
  // get close button
  var closeBtn = document.getElementsByClassName('closeBtn');

  // listen for click event 
  modalbtn.addEventListener('click', openModal);

  // function to open modal
  function openModal() {
    modal.style.display = 'block';
  }

.modal {
  position: fixed;
  z-index: 1;
  left: 0;
  top: 0;
  height: 100%;
  width: 100%;
  overflow: auto;
  background-color: rgba(0, 0, 0, 0.719);
  display: none;
}

.modal-content {
  background-color: #f4f4f4;
  margin: 20% auto;
  padding: 20px;
  width: 70%;
  box-shadow: 0 5px 8px rgba(0, 0, 0, 0.2), 0 7px 20px rgba(0, 0, 0, 0.2);
}

.closeBtn {
  color: #ccc;
  float: right;
  font-size: 30px;
}

.closeBtn:hover,
.closeBtn:focus {
  color: #000;
  text-decoration: none;
  cursor: pointer;
}

<div class="items">

  <div id="simpleModal" class="modal">
    <div class="modal-content">
      <span class="closeBtn">&times;</span>
      <p>?</p>
    </div>
  </div>
</div>

Answer 1

Here var modalbtn = document.getElementsByClassName('style');, modal button is a collection of elements. Therefore , modalbtn.addEventListener('click', openModal); wont work here.

Add

var modalbtn = document.getElementsByClassName('style');
modalbtn.forEach(function(button){
// listen for click event 
button.addEventListener('click', openModal); 
})

This will iterate through the elements and attach click event to it.