<!DOCTYPE html>
<html lang="en-US">
  <head>
    <meta charset="utf-8">
    <meta name="viewport" content="width=device-width">
    <title>Object-oriented JavaScript prototype addition</title>
  </head>

  <body>
    <div>
      <label for="jscode">Enter code:</label>
      <input type="text" id="jscode">
      <button>Submit code</button>
    </div>

    <p></p>
  </body>

    <script>
      const input = document.querySelector('input');
      const btn = document.querySelector('button');
      const para 