How can I make an element to fadeout after pressing a button with animate.css?

<div class="animate__animated animate__fadeInUp animate__fast" role="alert">
  <strong>${alertmsg}</strong> ${msg}
  <button type="button" class="btn-close" aria-label="Close"></button>
</div>

how can I make it to fade out after pressing the close button?

if I included both animate__fadeInUp and animate__fadeOutUp class, it will just fadeout directly.

I feel you could just add and remove classes using normal DOM-manipulation for the desired effect, right?

Here's an example,

<--! First your could just add id's to both the div and button -->
<div id="alertContainer" class="animate__animated animate__fadeInUp animate__fast" role="alert">
  <strong>${alertmsg}</strong> ${msg}
  <button type="button" id="closeButton" class="btn-close" aria-label="Close"></button>
</div>

<script>
  const alertContainer = document.getElementById('alertContainer');
  const closeButton = document.getElementById('closeButton');


  // Later in js, you could just remove the fadeIn animation and add fadeOut
  closeButton.addEventListener('click', function() {
    alertContainer.classList.remove('animate__fadeInUp');
    alertContainer.classList.add('animate__fadeOutUp');

    // Wait for the animation to complete before removing the alert from the DOM
    setTimeout(function() {
      alertContainer.remove();
    }, 1000);
  });
</script>

Let me know if this helps

Cheers