js获取项目根路径

//js获取项目根路径，如： http://localhost:8083/uimcardprj function getRootPath(){
//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);
}

//http://localhost:9999/mbuy/user/login.action
function getRootPath(){
//pathName:--->   mbuy/user/login.action
var pathName = window.location.pathname.substring(1);
//webName:--->mbuy
var webName = pathName == '' ? '' : pathName.substring(0, pathName.indexOf('/'));
//return:--->http://localhost:9999/mbuy/
return window.location.protocol + '//' + window.location.host + '/'+ webName + '/';
}