Demo modal styles for micromodal.js and corresponding expected html. If using this, set the `awaitCloseAnimation` in config to true

micromodal.css

/**************************\
  Basic Modal Styles
\**************************/

.modal {
  font-family: -apple-system,BlinkMacSystemFont,avenir next,avenir,helvetica neue,helvetica,ubuntu,roboto,noto,segoe ui,arial,sans-serif;
}

.modal__overlay {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background: rgba(0,0,0,0.6);
  display: flex;
  justify-content: center;
  align-items: center;
}

.modal__container {
  background-color: #fff;
  padding: 30px;
  max-width: 500px;
  max-height: 100vh;
  border-radius: 4px;
  overflow-y: auto;
  box-sizing: border-box;
}

.modal__header {
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.modal__title {
  margin-top: 0;
  margin-bottom: 0;
  font-weight: 600;
  font-size: 1.25rem;
  line-height: 1.25;
  color: #00449e;
  box-sizing: border-box;
}

.modal__close {
  background: transparent;
  border: 0;
}

.modal__header .modal__close:before { content: "\2715"; }

.modal__content {
  margin-top: 2rem;
  margin-bottom: 2rem;
  line-height: 1.5;
  color: rgba(0,0,0,.8);
}

.modal__btn {
  font-size: .875rem;
  padding-left: 1rem;
  padding-right: 1rem;
  padding-top: .5rem;
  padding-bottom: .5rem;
  background-color: #e6e6e6;
  color: rgba(0,0,0,.8);
  border-radius: .25rem;
  border-style: none;
  border-width: 0;
  cursor: pointer;
  -webkit-appearance: button;
  text-transform: none;
  overflow: visible;
  line-height: 1.15;
  margin: 0;
  will-change: transform;
  -moz-osx-font-smoothing: grayscale;
  -webkit-backface-visibility: hidden;
  backface-visibility: hidden;
  -webkit-transform: translateZ(0);
  transform: translateZ(0);
  transition: -webkit-transform .25s ease-out;
  transition: transform .25s ease-out;
  transition: transform .25s ease-out,-webkit-transform .25s ease-out;
}

.modal__btn:focus, .modal__btn:hover {
  -webkit-transform: scale(1.05);
  transform: scale(1.05);
}

.modal__btn-primary {
  background-color: #00449e;
  color: #fff;
}



/**************************\
  Demo Animation Style
\**************************/
@keyframes mmfadeIn {
    from { opacity: 0; }
      to { opacity: 1; }
}

@keyframes mmfadeOut {
    from { opacity: 1; }
      to { opacity: 0; }
}

@keyframes mmslideIn {
  from { transform: translateY(15%); }
    to { transform: translateY(0); }
}

@keyframes mmslideOut {
    from { transform: translateY(0); }
    to { transform: translateY(-10%); }
}

.micromodal-slide {
  display: none;
}

.micromodal-slide.is-open {
  display: block;
}

.micromodal-slide[aria-hidden="false"] .modal__overlay {
  animation: mmfadeIn .3s cubic-bezier(0.0, 0.0, 0.2, 1);
}

.micromodal-slide[aria-hidden="false"] .modal__container {
  animation: mmslideIn .3s cubic-bezier(0, 0, .2, 1);
}

.micromodal-slide[aria-hidden="true"] .modal__overlay {
  animation: mmfadeOut .3s cubic-bezier(0.0, 0.0, 0.2, 1);
}

.micromodal-slide[aria-hidden="true"] .modal__container {
  animation: mmslideOut .3s cubic-bezier(0, 0, .2, 1);
}

.micromodal-slide .modal__container,
.micromodal-slide .modal__overlay {
  will-change: transform;
}

micromodal.html

  <div class="modal micromodal-slide" id="modal-1" aria-hidden="true">
    <div class="modal__overlay" tabindex="-1" data-micromodal-close>
      <div class="modal__container" role="dialog" aria-modal="true" aria-labelledby="modal-1-title">
        <header class="modal__header">
          <h2 class="modal__title" id="modal-1-title">
            Micromodal
          </h2>
          <button class="modal__close" aria-label="Close modal" data-micromodal-close></button>
        </header>
        <main class="modal__content" id="modal-1-content">
          <p>
            Try hitting the <code>tab</code> key and notice how the focus stays within the modal itself. Also, <code>esc</code> to close modal.
          </p>
        </main>
        <footer class="modal__footer">
          <button class="modal__btn modal__btn-primary">Continue</button>
          <button class="modal__btn" data-micromodal-close aria-label="Close this dialog window">Close</button>
        </footer>
      </div>
    </div>
  </div>

@Faq

You need to initialise the modal like:

MicroModal.init({
  onShow: modal => console.info(`${modal.id} is shown`), // [1]
  onClose: modal => console.info(`${modal.id} is hidden`), // [2]
  openTrigger: 'data-custom-open', // [3]
  closeTrigger: 'data-custom-close', // [4]
  openClass: 'is-open', // [5]
  disableScroll: true, // [6]
  disableFocus: false, // [7]
  awaitOpenAnimation: false, // [8]
  awaitCloseAnimation: false, // [9]
  debugMode: true // [10]
});

So you use the onShow event listener to add your logic into or add a function reference.

https://micromodal.vercel.app/

I always set:

awaitCloseAnimation: true

So for example:

MicroModal.init({
  onShow: function(modal, activeElement, event){
     microModalShow(modal, activeElement, event);
   }
 …
});

function microModalShow(modal, activeElement, event) {
   if(modal.id === ‘someModalId’){
     console.log('event target data bundle id: ', event.target.getAttribute("data-bundle-id")); 
     // 1
   }
}

https://codepen.io/charles1971/pen/qBELEVN

thank you @charlesr1971 , but still getting:
Uncaught TypeError: Cannot read properties of undefined (reading 'target')
It might be because of using different jquery version?

jQuery.fn.jquery
'3.4.1'

Your example using:
'3.6.3'

@Faq Hmmm. That’s a bit strange. Not sure that JQuery is being used, when I reference:

event.target

Although, maybe your version of JQuery is clashing with something in the micromodal library. I reckon this is highly unlikely?

All I can say, is that my codePen works, so maybe you have an old version of micromodal?

Try copying my code and then adapting it, for your own purposes. Once you have done this, if it still throws an error, post your code and I will try and debug it.

This kind of code, just won’t work:

$('#edit_data_modal').on('show.bs.modal', function (event) {
    var button = $(event.relatedTarget); // Button that triggered the modal
    var bundle_id = button.data('bundle_id'); // Extract info from data-* attributes
    var modal = $(this);
    modal.find('#bundle_id').val(bundle_id);
});

Yeah that was the case, had 0.4.2, solved with yarn upgrade micromodal@^0.4.10, again thank you :)

@Faq Awesome 👏🏻