Add the start variable for add new answers in JS

index.php

@@ -92,7 +92,6 @@ $cs = Course::getCourses();
 
 foreach($cs as $c)
   print '<option value="'.$c->getId().'">'.$c->getName().'</option>';
-
 ?>
             </select>
           </article>
@@ -120,6 +119,7 @@ foreach($cs as $c)
             </p>
 
             <p>
+              <script type="text/javascript">var nbAnswer = 1;</script>
               <input type="button" value="Ajouter une réponse supplémentaire"
                      onclick="add()"/>
             </p>