index.html

<!DOCTYPE html>
<html>
<head>
  <meta charset="utf-8">
  <title>手势</title>
  <meta name="viewport" content="width=device-width">
  
  <style>

    body {
      text-align: center;
      margin: auto;
      padding: 0;
      box-sizing: border-box;
    }

    .log {
      display: inline-block;
      position: absolute;
      margin-top: 150px;
    }
    
    .red {
      color: red;
    }
  </style>

</head>
<body>

  <div class="log">没有触发任何事件</div>

  <script type="module" src="./index.js"></script>
</body>
</html>