javascript获得url中的参数值

<Script  >  
alert(location.href);  
alert(window.location.href);  
alert(location.search);  
alert(window.location.search);  
 
var  url  =    "http://www.stefli.com/test.aspx?aa=1&bb=2  ";  
alert(url.split(  "?  ")[1].split(  "&  "));  
 </Script  >