Image modal

Modal text link

Modal header

Modal body

JavaScript

// Get the modal
const modal = document.getElementById("modal");

// Get the image and insert it inside the modal
const img = document.getElementById("image-modal");
const modalImage = document.getElementById("image");
img.onclick = function() {
  modal.classList.add("modal--show");
  modalImage.src = this.src; 
}

// Close the modal when background is clicked
modal.onclick = function(event) {
  if(event.target.id !== "image") {
    modal.classList.remove("modal--show");
  } 
}

CSS

#image-modal { 
  cursor: pointer;
  transition: 0.3s;
}

#image-modal:hover {
  opacity: 0.8;
}

.modal {
  display: none;
  position: fixed;
  z-index: 1;
  left: 0;
  top: 0;
  width: 100%;
  height: 100%;
  justify-content: center;
  align-items: center;
  overflow: auto;
  background-color: rgba(0,0,0,0.8);
}

.modal__image {
  margin: auto;
  display: block;
  width: 70%;
  max-width: 700px;
}

.modal--show {
  display: flex;
}

@media only screen and (max-width: 700px) {
  .modal__image {
    width: 100%;
  }
}

Article code

<!-- Image to open the modal -->
<img id="image-modal" src="image-url" alt="image modal">
<!-- The modal -->
<div id="modal" class="modal">
  <!-- The image in the modal -->
  <img id="image" class="modal__image">
</div>