I don't know how to trigger an input if this is a array.
I can read the value, but i don't know what is the input that have made the event.
$('input[name^="months"]').change(function() {
alert($(this).val());
});
<input type="text" name="months[january]" value="100">
<input type="text" name="months[february]" value="150">
Thanks.