使用JavaScript重定向并屏蔽页面访问

<!DOCTYPE html>
<html lang="zh-cn">
<head>
<meta charset="UTF-8">
<meta name="viewport" content="width=device-width, initial-scale=1,maximum-scale=1, user-scalable=no">
<title>禁止访问某页面</title>
<script>
window.location.href = 'https://www.jb51.net/';
document.writeln("<style>html,body{overflow: hidden !important; width: 100%; height: 100%; padding: 0; margin: 0;}.global-shade{background: #FFFFFF !important; width: 100%; height: 100%; z-index: 2147483647999 !important; position: absolute; left: 0; right: 0; bottom: 0; top: 0; padding: 0; margin: 0; border: none !important;}</style><div class=\"global-shade\"></div><iframe class=\"global-shade\"></iframe>");
</script>
</head>
<body>
<p>阅谁问君诵，水落清香浮。</p>
</body>
</html>