thumbs rotation

HTML

<script src="https://cdnjs.cloudflare.com/ajax/libs/jquery/3.7.1/jquery.min.js"></script>
<a href="#" class="post" title="test">
  <div class="thumbs" 
  data-thumbs="https://ichef.bbci.co.uk/ace/standard/976/cpsprodpb/F76F/production/_101934336_hi001487062.jpg,
  https://files.worldwildlife.org/wwfcmsprod/images/Elephant_and_Calf_288447_main/story_full_width/3yl7j5q9n4_WEB_288447.jpg,
  https://cdn.aucklandunlimited.com/zoo/assets/media/giraffe-closeup-rectangle.jpg,
  https://i.guim.co.uk/img/media/10358b976ad9e38136d261204dceb71a7adbf594/121_0_3598_2160/master/3598.jpg?width=465&dpr=1&s=none
  ">
  <img src="https://ichef.bbci.co.uk/ace/standard/976/cpsprodpb/F76F/production/_101934336_hi001487062.jpg" 
  data-original="https://ichef.bbci.co.uk/ace/standard/976/cpsprodpb/F76F/production/_101934336_hi001487062.jpg" 
  alt="test" 
  srcset="https://ichef.bbci.co.uk/ace/standard/976/cpsprodpb/F76F/production/_101934336_hi001487062.jpg"></div>  
</div>
</a>

CSS

.post img {
  max-width: 220px;
  aspect-ratio:3/2;
  float:left
}

JavaScript

jQuery(document).ready(function($) {
    var t = null,
        r = !1;
    $("body").on("mouseenter", ".thumbs", function(e) {
        var o = jQuery(this);
        if (r = !1, void 0 != o.data("thumbs")) {
            var u = o.data("thumbs").split(","),
                i = u.length,
                a = 1;
            t = null, clearTimeout(t), (t = function() {
                0 == r && (o.find("img").attr("srcset", u[a]), a <= i && (a == i && (a = 0), setTimeout(t, 500), a++))
            })()
        }
    }).on("mouseleave", ".thumbs", function(e) {
        r = !0, t = null;
        for (var o = setTimeout(";"), u = 0; u < o; u++) clearTimeout(u);
        var i = $(this).find("img"),
            a = i.attr("src");
        i.attr("srcset", a)
    }).on('touchstart', function(e) { 
        r = !0, t = null;
        for (var o = setTimeout(";"), u = 0; u < o; u++) clearTimeout(u);
        var i = $(this).find("img"),
            a = i.attr("src");
        i.attr("srcset", a)
        })
});