jQuery.ajax例子

 function save()
 {
    var id= $("#id").val();//参数为空
    var producttype=$("#producttype").val();
    $.ajax({
     type: "POST",
     url: "SpecialOrder!orderexpiration.<%=Constants.ActionExt%>",
     data: '&orderid=' + id,
     success: function(msg)
     {   
        if(msg=='0')
        {
            $.ajax({
             type: "POST",
                url: "CancelOrder!cancelorder.<%=Constants.ActionExt%>",
                data: '&id=' + id+'&producttype='+producttype,
                success: function(msg)
                {                  
              strArr = msg.split('==');
                    if(strArr[0]=='1')//                    {
                     alert(strArr[1]); 
                     $("#btnSubmit").attr("disabled","true");          
                    }
                    else
                    {
                     alert(strArr[1]);
                     $("#btnSubmit").removeAttr("disabled");
                    }
                }
          });
      }
      else
      {
             alert("提示******");
         }
    }
     });   
 }