var data = $(document.body).data('trafikk');

 $(data).each(function(index, value){
        // filter function
        $(data[index].ActualCounties).each(function(i, county){

            // if road is in more than 1 county, iterate
            if(!$.isArray(county.String )) county.String = [count.String];

            data[index].include = (filter.indexOf(county.String.join()) < 0) ? false: true;



        });