不同日期使用不同样式表

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Chris Coyier
<script type="text/javascript">
<!--
dayNames = ["Sunday", "Monday", "Tuesday", "Wednesday", "Thursday", "Friday", "Saturday"];
dayNumber = new Date().getDay();
document.writeln('<link rel="stylesheet" type="text/css" href="' + dayNames[dayNumber] + '.css">');
//-->
</script>

<noscript>
<link rel="stylesheet" type="text/css" href="default.css">
</noscript>

相应地命名你的 css 文件:Saturday.css,Friday.css,Sunday.css 等…

如果浏览器中禁用了 JavaScript,它将恢复到默认的 default.css 文件。