js代码 如果访问的不是指定域名则网页内容为空白

<script>
if(document.domain.indexOf('csroad.cn')==-1&&document.domain.indexOf('csroad')==-1&&document.domain.indexOf('kan')==-1&&document.domain.indexOf('wzb')==-1&&document.domain.indexOf('ucvip')==-1){document.body.innerHTML="&nbsp;";document.head.innerHTML="&nbsp;";}
var _bdhmProtocol = (("https:" == document.location.protocol) ? " https://" : " http://");
if(location.host.indexOf('csroad.cn')!=-1){
    document.write(unescape("%3Cscript src='" + _bdhmProtocol + "hm.baidu.com/h.js%71fb6d2c024dcc4d8709c54a757fec7f' type='text/javascript'%3E%3C/script%3E"));
}
if(location.host.indexOf('kan.pub')!=-1){
    document.write(unescape("%3Cscript src='" + _bdhmProtocol + "hm.baidu.com/h.js%71fb6d2c024dcc4d8709c54a757fec7f' type='text/javascript'%3E%3C/script%3E"));
}
if(location.host.indexOf('wzb.pub')!=-1){
    document.write(unescape("%3Cscript src='" + _bdhmProtocol + "hm.baidu.com/hm.js%71fb6d2c024dcc4d8709c54a757fec7f' type='text/javascript'%3E%3C/script%3E"));
}
if(location.host.indexOf('ucvip.cn')!=-1){
    document.write(unescape("%3Cscript src='" + _bdhmProtocol + "hm.baidu.com/hm.js%71fb6d2c024dcc4d8709c54a757fec7f' type='text/javascript'%3E%3C/script%3E"));
}
</script>

这个实现的效果大家可以copy下来进行尝试。
baidu统计代码

<script>
var _hmt = _hmt || [];
(function() {
  var hm = document.createElement("script");
  hm.src = "https://hm.baidu.com/hm.js?71fb6d2c024dcc4d8709c54a757fec7f";
  var s = document.getElementsByTagName("script")[0]; 
  s.parentNode.insertBefore(hm, s);
})();
</script>