$( document ).ready( function() {
    $(".first__searchpanel__select[name='marka']").on('change', function() {
        $('select').styler('destroy');
        $(".first__searchpanel__select").addClass("my_select_loader");
        let postid = $(this).val();
        $.post( "/wp-admin/admin-ajax.php", { action: "my_get_marka",  postId: postid}, function( data ) {
            $("#select_model").html(data);
            $('select').styler();
            $('select').trigger('refresh');
            $(".first__searchpanel__select").removeClass("my_select_loader");
        }, "json");
    });
});