js获取浏览器语言（ie、ff、chrome）、contextpath

/js获取浏览器语言（ie、ff、chrome） 

var language_en_us = "en-us";
var language_zh_cn = "zh-cn";
var currentLang;
var en_lang = { 'test.name': "name",'test.age': "age"};
var zh_lang = { 'test.name'': "名字",'test.age'': "年龄"};
var current_lang_map;

currentLang = navigator.language;
if(!currentLang)
    currentLang = navigator.browserLanguage;
if(currentLang.toLowerCase() == language_zh_CN)
{
    current_lang_map = zh_lang;
}
else
{
    current_lang_map = en_lang;
}

dirstr += "<div id=age' class='age'>" +current_lang_map['test.name']+":8"+"</div>";

js获取上下文路径（contextPath） 

//获取contextpath
function getContextPath() {
  var pathName = document.location.pathname;
  var index = pathName.substr(1).indexOf("/");
  var result = pathName.substr(0,index+1);
  return result;
}