diff --git a/web/html/adduser.html b/web/html/adduser.html
index 6c04320..36f63e5 100644
--- a/web/html/adduser.html
+++ b/web/html/adduser.html
@@ -118,6 +118,30 @@
 
     <main class="col-md-9 ms-sm-auto col-lg-10 px-md-4">
 
+      <div class="alert alert-warning alert-dismissible hidden" id="notModifiedAlert" role="alert">
+        <div>Utilisateur non modifié</div>
+         <button type="button"  class="btn-close" data-bs-dismiss="alert" aria-label="Close"></button>
+      </div>
+
+      <div class="alert alert-danger alert-dismissible hidden" id="notModifiedAlert" role="alert">
+        <div>Action non autorisée</div>
+         <button type="button"  class="btn-close" data-bs-dismiss="alert" aria-label="Close"></button>
+      </div>
+
+      <div class="alert alert-danger alert-dismissible hidden" id="forbiddenAlert" role="alert">
+        <div>Action interdite</div>
+         <button type="button"  class="btn-close" data-bs-dismiss="alert" aria-label="Close"></button>
+      </div>
+
+      <div class="alert alert-danger alert-dismissible hidden" id="internalServerAlert" role="alert">
+        <div>Erreur interne du serveur</div>
+         <button type="button"  class="btn-close" data-bs-dismiss="alert" aria-label="Close"></button>
+      </div>
+
+      <div class="alert alert-danger alert-dismissible hidden" id="unknownAlert" role="alert">
+        <div>Erreur inconnue</div>
+         <button type="button"  class="btn-close" data-bs-dismiss="alert" aria-label="Close"></button>
+      </div>
       
       
       <div class="d-flex justify-content-between flex-wrap flex-md-nowrap align-items-center pt-3 pb-2 mb-3 border-bottom">
diff --git a/web/js/addUser.js b/web/js/addUser.js
index 3d6e55e..d22d242 100644
--- a/web/js/addUser.js
+++ b/web/js/addUser.js
@@ -46,28 +46,35 @@ document.getElementById("addUser").addEventListener("click", function(){
             withCredentials: true, 
             data: dataPut
         }).then(function(response){
+            var idAlert = "";
             switch(response.status){
-                case 200:
+                case 201:
                     location.reload();
                     break;
                 case 204:
-                    console.log("Aucun contenu");
-                    break;
-                case 401:
-                    console.log("non autorisé");
-                    break;
-                case 403:
-                    console.log("interdit");
-                    break;
-                case 500:
-                    console.log("erreur interne");
+                    idAlert="notModified"
                     break;
                 default:
-                    console.log("error inconnue");
+                    idAlert="unknown";
                     break
             }
+            document.getElementById(idAlert+"Alert").classList.remove("hidden");
         }).catch(function(error){
-            console.log(error);
+            switch(error.status){
+                case 401:
+                    idAlert="notAuthorized";
+                    break;
+                case 403:
+                    idAlert="forbidden";
+                    break;
+                case 500:
+                    idAlert="internalServer";
+                    break;
+                default:
+                    idAlert="unknown";
+                    break;
+            }
+            document.getElementById(idAlert+"Alert").classList.remove("hidden");
         });
 
     }