JS - Redirect to a page, when change values in drop-down list, select

gistfile1.txt

<script>
	$(function(){
		$(document).on("change", "#spa_list", function(){
		 var spaID = $(this).val();
		 //alert(spaID);
		 window.location = "history.php?var1=3&spaIDjS="+spaID;
	  }); //End of $(document).on("change", ...    
	});//End of $(function(){
</script> 

<script>
	$(function(){
		$("#btn_send").on("click", function(e){
		   e.preventDefault();
		   $('form').attr('action','myPage.php'); 
	        });   
	});//End of $(function(){
</script>