js中获取项目路径的小插件

//立即执行的js
(function() {
//获取contextPath
var contextPath = getContextPath();
//获取basePath
var basePath = getBasePath();
//将获取到contextPath和basePath分别赋值给window对象的g_contextPath属性和g_basePath属性
window.g_contextPath = contextPath;
window.g_basePath = basePath;
})();

/**
* @author 孤傲苍狼
* 获得项目根路径，等价于jsp页面中
*  <%
String basePath = request.getScheme()+"://"+request.getServerName()+":"+request.getServerPort()+path+"/";
%>
* 使用方法：getBasePath();
* @returns 项目的根路径
*
*/
function getBasePath() {
var curWwwPath = window.document.location.href;
var pathName = window.document.location.pathname;
var pos = curWwwPath.indexOf(pathName);
var localhostPath = curWwwPath.substring(0, pos);
var projectName = pathName.substring(0, pathName.substr(1).indexOf('/') + 1);
return (localhostPath + projectName);
}

/**
* @author 孤傲苍狼
* 获取Web应用的contextPath，等价于jsp页面中
*  <%
String path = request.getContextPath();
%>
* 使用方法:getContextPath();
* @returns /项目名称(/EasyUIStudy_20141104)
*/
function getContextPath() {
return window.document.location.pathname.substring(0, window.document.location.pathname.indexOf('\/', 1));
};