当请求因浏览器重新加载而失败时，jQuery $ .ajax调用成功处理程序

I have the following code:

我有以下代码：

 $.ajax({
          type: "POST",
          url: url,
          data: sendable,
          dataType: "json",
          success: function(data) {

               if(customprocessfunc)
                   customprocessfunc(data);
         },

          error: function(XMLHttpRequest, textStatus, errorThrown){
                    // error handler here
                }
        });
 $.ajax(