jQuery把表单元素变为json对象

(function($){  
$.fn.serializeObject=function(){  
           var inputs=$(this).find("input,textarea,select");  
           var o = {};  
           $.each(inputs,function(i,n){  
               switch(n.nodeName.toUpperCase()){  
                   case "INPUT":  
                       if($(n).is(":checkbox")){  
                           if($(n).is(":checked")){  
                               o[n.name]=true;  
                           }else{  
                               o[n.name]=false;  
                           }  
                       }else if($(n).is(":radio")){  
                           if($(n).is(":checked")){  
                               o[n.name]=n.value;  
                           }  
                       }else{  
                           o[n.name]=n.value;   
                       }                         break;  
                   case "TEXTAREA":  
                       o[n.name]=$(n).text();  
                       break;  
                   case "SELECT":  
                       o[n.name]=n.value;  
                       break;  
               }  
           });  
           return o;  
       }  
})(jQuery);