JQ获取当前根目录

function getRootPath_web() {
            //获取当前网址，如： http://localhost:8083/uimcardprj/share/meun.jsp
            var curWwwPath = window.document.location.href;
            //获取主机地址之后的目录，如： uimcardprj/share/meun.jsp
            var pathName = window.document.location.pathname;
            var pos = curWwwPath.indexOf(pathName);
            //获取主机地址，如： http://localhost:8083
            var localhostPaht = curWwwPath.substring(0, pos);
            //获取带"/"的项目名，如：/uimcardprj
            var projectName = pathName.substring(0, pathName.substr(1).indexOf('/') + 1);
            return (localhostPaht + projectName);
 }