jQuery自动获取form表单各元素的值

下面使用jquery自带方法serializeArray

$.ajax({  
   type: "POST",  
   url: "/Mall/ajax_cart.html",  
   data: $(form).serializeArray(),  
                        dataType: 'json',  
   success: function(msg){  
       $("#allmoney").html("¥"+msg);  
   }  
});