HTML按钮点击加载JS文件代码示例

<!DOCTYPE html>
<html>
<head>
  <script src='https://code.jquery.com/jquery-3.6.0.min.js'></script>
</head>
<body>
  <button onclick='loadScript()'>点击加载JS文件</button>
  <script>
    function loadScript() {
      var script = document.createElement('script');
      script.src = 'your-script.js';
      document.head.appendChild(script);
    }
  </script>
</body>
</html>