JavaScript获取网站根目录地址

unixtux

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); }var webpath=getRootPath();  //webpath就是目录路径变量