[出处]https://fishc.com.cn/thread-116211-1-1.html
<!DOCTYPE html>
<html>
<head>
<title>定义文档内嵌代码</title>
<meta charset="utf-8">
<meta name="viewport" content="width=device-width, initial-scale=1.0">
<meta name="keywords" content="小甲鱼,Web开发,HTML5,CSS3,Web编程教学">
<meta name="description" content="《零基础入门学习Web开发》案例演示">
<meta name="author" content="小甲鱼">
<script type="text/javascript">
document.write("I love FishC.com!");
</script>
<noscript>
<p>您的网页不支持JavaScript，将自动跳转到一个神奇的网站 -> http://demo.fishc.com</p>
<meta http-equiv="refresh" content="1; http://demo.fishc.com">
</noscript>
</head>
<body>
<p>没有 JavaScript，HTML5 玩不转啊！</p>
</body>
</html>
运用noscript和meta标签实现
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