javascript获取网站根目录
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);}
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