JS截取url中问号后面参数的值信息

var url=location.search; 
var ename; 
var Request = new Object(); 
if(url.indexOf("?")!=-1) 
{ 
var str = url.substr(1); 
strs= str.split("&"); 
for(var i=0;i 
{ 
Request[strs[i].split("=")[0]]=(strs[i].split("=")[1]); 
} 
} 
ename = Request["ename"];

例如：url是：http://www.medivh.com?ename=right

那么获取的ename就为：right.