<!doctype html>
<html>
<head>
<title>Dummy test page</title>
<meta http-equiv="Content-Type" content="text/html;charset=utf-8"></meta>
</head>
<body>
<p>Dummy test page</p>
<div id="holder" class="">Holder</div>
<script>
  let text = "";
  for (let i = 0; i < 1000; i++) {
    text += "more";
    // eslint-disable-next-line no-unsanitized/property
    document.getElementById("holder").innerHTML = text;
  }
  document.getElementById("holder").classList.add("loaded");
</script>
</body>
</html>
