MC-XOBAHCK,
<!DOCTYPE html>
<html>
<head>
<title>Untitled</title>
<meta charset="utf-8">
<style type="text/css">
.comment-delete{
background-color: #FF00FF;
}
</style>
</head>
<body>
<div id="comment">comment</div>
<script>
comment.classList.add('comment-delete');
async function wait() {
await new Promise(resolve => setTimeout(resolve, 100));
return confirm("Удалить комментарий?");
}
function f() {
wait().then(result => alert(result));
}
f();
</script>
</body>
</html>