Valida si se escribe salón o no

solicitudes_autorizar.php

@@ -365,7 +365,7 @@ if($user->periodo_id!= ""){
             <div class="modal-dialog modal-dialog-centered modal-lg" role="document">
                 <div class="modal-content">
                     <div class="modal-header">
-                        <h4 class="col-12 modal-title text-center"><span id="modalLabel">Aprobar Reposición</span>
+                        <h4 class="col-12 modal-title text-center"><span id="modalLabel">Aprobar</span>
                         <button type="button" class="close text-white" data-dismiss="modal" aria-label="Close">
                             <span aria-hidden="true">&times;</span>
                         </button></h4>
@@ -974,6 +974,13 @@ if($user->periodo_id!= ""){
 
         $("#submitBtn").click(function(){
             var edo =  parseInt($("#edo").val());
+
+            if($("#salon-editar").is(":visible")){
+                if($("#dlSalon").val() == ""){
+                    $("#dlSalon").addClass("is-invalid");
+                    return false;
+                }
+            }
             console.log(edo)
             if((edo == 3 && valida()) || edo == 2){
                 $("#loadingGroup").show();