Question

How i can  catch http code status in dataFilter? Have the following code:

$.ajaxSetup ({
    dataFilter: function (data) {
      //need know http status for change data

      return data;
   }
});

Answer 1

You cannot do this using the dataFilter. From the docs:

dataFilter(data, type)Function
A function to be used to handle the raw response data of XMLHttpRequest.This is a pre-filtering function to sanitize the response. You should return the sanitized data. The function accepts two arguments: The raw data returned from the server and the ‘dataType’ parameter.

Plus the ajaxSetup that you are referencing is used to define default ajax settings for when you make a jQuery ajax call. That code does not actually make an ajax call.

There is a statusCode attribute to the jQuery ajax method that has what you are looking for. You could also use success and error which are called depending on the resulting status code.

Read up on all of this in the docs: jQuery.ajax() API