My script can't make this, and I don't know why.
<script>
jQuery('#hondabtn').on('click', function(){
alert(jQuery('#carsubject').val());
jQuery('#carsubject').val('NEW VAL');
alert(jQuery('#carsubject').val());
});
</script>
Both of alerts work and display things as I need. BUT nothing change in text input element with id="carsubject"