demo.html

<!DOCTYPE html>
<html>
  <head>
    <meta charset="utf-8">
    <title>lmax</title>
    <style>
    * { font-family:tahoma; font-size:12px; padding:0px;margin:0px;}
    p { line-height:18px; }
    div { width:500px; margin-left:auto; margin-right:auto;}
    #content { padding:5px; background:#ddd; border-radius:5px;
        overflow-y: scroll; border:1px solid #CCC;
        margin-top:10px; height: 160px; }
    #input { border-radius:2px; border:1px solid #ccc;
        margin-top:10px; padding:5px; width:400px;
    }
    #status { width:88px;display:block;float:left;margin-top:15px; }
  </style>
  </head>
  <body>
    <div id="content"></div>
    <div>
      <span id="status">Connecting...</span>
    </div>
<script
			  src="https://code.jquery.com/jquery-3.4.1.min.js"
			  integrity="sha256-CSXorXvZcTkaix6Yvo6HppcZGetbYMGWSFlBw8HfCJo="
			  crossorigin="anonymous"></script>
    <script src="./frontend.js"></script>
  </body>
</html>