starter/index.html

<!DOCTYPE html>
<html>
  <head>
    <meta charset="utf-8">
    <meta name="viewport" content="width=device-width, user-scalable=no" />
    <title>Melodybot</title>

    <!-- The top-level script -->
    <script type="text/javascript" src="polyfills.js"></script>
    <script type="text/javascript" src="api-client.js"></script>
    <script type="text/javascript" src="audio-engine.js"></script>
    <script type="text/javascript" src="synth.js"></script>
    <script type="text/javascript" src="piano-display.js"></script>
    <script type="text/javascript" src="status.js"></script>
    <script type="text/javascript" src="index.js"></script>

    <link href="https://fonts.googleapis.com/css?family=Roboto:400,500&display=swap" rel="stylesheet" />
    <link rel="stylesheet" type="text/css" href="index.css" />
    <style>
      body, html {
        margin: 0;
        padding: 0;
      }
    </style>
  </head>
  <body>
    <div id='melodybot' class='phase-starting'>

      <div id='starting'>
        <h1>Welcome to Melodybot</h1>
        <div>
          <button id='start'>Play!</button>
        </div>
      </div>

      <div id='main'>
        <h1>MELODYBOT</h1>
        <div class="buttons">
          <button id='stop'>Stop</button>
          <button id='resume'>Start</button>
          <button id='refresh'>New Pattern</button>
        </div>
       <div id='status-display'>
         <span id='key-name'></span>
         <span id='generator-name'></span>
       </div>
        <canvas id='piano-display' />
      </div>

      <div id='error'>
        <h1>OOPS!</h1>
        <p>Something went wrong there.</p>
        <p id="error-message"></p>
        <p>Please refresh the page.</p>
      </div>

    </div>
    <footer><a href="https://noopschallenge.com/challenges/melodybot">Learn more at noopschallenge.com</a></footer>

  </body>
</html>