获取url地址参数值

1 function GetQueryString(name)   
2          {   
3            var reg = new RegExp("(^|&)" + name + "=([^&]*)(&|$)","i");   
4            var r = window.location.search.substr(1).match(reg);   
5            if (r!=null) return unescape(r[2]); 
6            return null;   
7          }   

1 var bg = GetQueryString("bg-color");
2         if (bg) {
3             alert(bg)
4         }