scanner.html

<html>
  <head>
    <script src="https://cdnjs.cloudflare.com/ajax/libs/p5.js/1.4.0/p5.min.js"></script>
    <script src="js/jsQR.js"></script>
	<script src="js/wasm_exec.js"></script>
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    
    <style>
      .container {
        display: flex;
      }
      
      .canvas {
        position: absolute;
        margin-top: 8px;
        margin-left: 8px;
        z-index: 10;
      }
      
      .video {
        display: none
      }
      
      .scanResult {
        position: absolute;
        font-size: 24px;
        margin-left: 8px;
        padding: 20px;
        color: #fff;
      }
    </style>
  </head>
  <body>
    <div id="error"></div>
    
    <div class="container">
		<video class="video" id="video"></video>
		<canvas class="canvas" id="canvas"></canvas>
    </div>
    <span class="scanResult" id="scanResult"></span>
    
    <script src="js/scanner.js"></script>
  </body>
</html>