<form id="form-vote-note-<?php echo $value->id_note; ?>" class="form-vote-note" metod="POST" action="">
<input type="hidden" name="idvote" id="idvote" value="<?php echo $value->id_note; ?>">
<input class="form-check-input" type="radio" name="voteradio" id="voteradio" value="3">
<input class="form-check-input" type="radio" name="voteradio" id="voteradio" value="2">
<button type="submit" class="btn btn-primary">Oceń</button>
</form>

$('#form-vote-note').submit(function() {

            var notevote = $('input:radio[name=voteradio]:checked').val();
            var idvote = $('input[name=idvote]').val();
            alert("notevote: " + notevote + " --- idvote: " + idvote);

            //alert("Ocena: " + notevote + "nId vote: " + idvote);
            $.ajax ({
                url: "<?php echo base_url();?>database/save_vote_note/",
                type: "POST",
                data: {idvote: idvote, notevote: notevote, id_product: <?php echo $id_product;?>},
                dataType: 'json',
                success: function(data) {

                    alert("Id vote:" + data.value['idvote'] + "n voteradio: " + data.value['notevote'] + "n id_product:" + data.value['id_product'])
                },
                error: function() {

                },
            });
        });