জেকুয়েরী hasClass এইচটিএমএল সিএসএস

<!DOCTYPE html>
<html>
<head>
<script src="https://code.jquery.com/jquery-3.7.1.min.js"></script>
<style>
.tomato {
  background: tomato;
}
</style>
<script>
$(document).ready(function(){
  $("button").click(function(){
    if($("div").hasClass("tomato")){
      $("p").text("class exists");
    }
  });
});
</script>
</head>
<body>
<button>ফলাফল</button>
<div class="tomato"></div>
<p></p>
</body>
</html>