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Javascript Loop based on PHP Loop

I need help creating a javascript snippet to show each individual popup when hovering over each card title. Card 1 shows popup 1, card 2 shows popup 2, etc.

HTML/PHP loop setting up multiple popups. The number of popups change depending on how many custom posts (WordPress) have been created.

<?php while ($post_query->have_posts()) {?>
   <?php $post_query->the_post();?>
   <div class="card" id="card-0<?php echo $counter; ?>">
      <h4 class="post-title">“<?php echo get_the_title(); ?>”</h4>
   </div>
<?php }?>
    
<div class="popup" id="popup-0<?php echo $counter++; ?>">
   <h4 class="post-title">“<?php echo get_the_title(); ?>”</h4>
   <p class="blurb"><?php echo get_field('blurb'); ?></p>
</div>

This is my Javascript to show/hide each popup, however since I don't know how many popups will be generated in the PHP loop, I need this to loop with each loop changing the #past-card-01 and #popup-01 incrementally (01, 02, 03, etc.) based on how many were generated.

Or, if there was a way to get the element class or id that is being hovered and then use that information to change what the .hover function applies to.

$(document).ready(function(){
    $("#card-01").hover(function(){
      $("#popup-01").css("opacity", "1");
      }, function(){
      $("#popup-01").css("opacity", "0");
    });
  });


source https://stackoverflow.com/questions/68595602/javascript-loop-based-on-php-loop

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