Im trying to get the value of an date input to use it with a php function which return a result that depend of the date entrend

any Ideas

2. <script type="text/javascript">
3. $(function(){ 
4.                 $("#Salle").on('input', function() {
5.                     $("#Salle").autocomplete({source: 'conf/salle_auto.php?key='+$("#Salle").val()+ '&Datee=' + $("#Date_de_Soutenance").val()  });                });            });       
6.  </script>
7. 
   
8. 
   
10. <label>Date</label>  
11. <input type="date" class="typeahead tt-query"  name="Date_de_Soutenance" value="" placeholder="Date_de_Soutenance" disabled required onblur="Verifdate();">