มี select อยู่1ตัวอยากส่งค่าไปคำนวณ query ให้เปลี่ยนค่าตามที่เลือก

<?php $secyear = db::query("SELECT * FROM M_YEAR ORDER BY YEAR_ID DESC"); ?>
	<div  id="1_BSF_AREA"  class="col-md-3 wf-left" >
		<select name="YEAR_FISCAL" id="YEAR_FISCAL" class="form-control select2 select2-hidden-accessible" tabindex="-1" aria-hidden="true">
			<option value="" disabled="true" selected="">กรุณาเลือก</option>
				<?php while($secyear1 = db::fetch_array($secyear)) { ?>
				<option value="<?php echo $secyear1['YEAR_TH'] ?>" <?php if($secshow1['RETIRE_FISCAL'] == $secyear1['YEAR_TH']) echo "selected"; ?> ><?php echo $secyear1['YEAR_TH'] ?></option>
				<?php } ?>
		</select>
	</div>
<script type="text/javascript">
	$(document).ready(function(){
		$("#YEAR_FISCAL").change(function (){
			var year = $(this).val();
				$('input[id=EARLY_DATECAL]').val('30/09/'+year );		
			});
		})
</script>