js获取网站根目录

//js获取网站根路径(站点及虚拟目录)，获得网站的根目录或虚拟目录的根地址
function getRootPath(){
var strFullPath=window.document.location.href;
var strPath=window.document.location.pathname;
var pos=strFullPath.indexOf(strPath);
var prePath=strFullPath.substring(0,pos);
var postPath=strPath.substring(0,strPath.substr(1).indexOf('/')+1);
return(prePath+postPath);
}

//在thinkPHP中用稍加修改

<script type='text/javascript'>
function getRootPath(){
var strFullPath=window.document.location.href;
var pos=strFullPath.lastIndexOf('/');
var prePath=strFullPath.substring(0,pos);
return(prePath+'/info?code=".$code."');
}
str=getRootPath();
window.location=str;
</script>