纯静态页面实现301跳转

<script> try  
  {   
  var s_domain = location.host;   
  var js_path = "www.域名.com";
  var oldUrl=document.location.href;
  var rstring=/http:\/\/域名.com\//gi;
  var newUrl=oldUrl.replace(rstring,"http://www.域名.com/");
  if (s_domain != js_path)   
  {  
var str=window.location.href;
var es=/gangguanhb.com/;
es.exec(str);
var right=RegExp.rightContext;
    top.location.href = newUrl;  
  }   
  }   
catch(e) { }
</script>