html 解决css样式 缓存 ---css引入添加时间戳

 通过js 对引入的css添加时间戳

<script type="text/javascript">
        document.write("<link rel='stylesheet' type='text/css' href='./style/base.css?v=" + new Date().getTime() + "'>");
        document.write("<link rel='stylesheet' type='text/css' href='./style/index.css?v=" + new Date().getTime() + "'>");   
    </script>