先获取当前的全路径,然后对全路径进行分析获取到跟路径
//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)
}