html5 datetime instead of jquery

anhang pdf rechnung

public/js/billing.js

@@ -30,6 +30,12 @@ $(function() {
      
 });
 
+function logData(event){
+    var data = document.getElementById("billfile");
+    console.log(data.value);
+    
+}
+
 function addLine(){
     $('#linecont > div').each(function () {
         if ($(this).hasClass("d-none")){