anchor.diff:            <div class="col-lg-4">
               <div class="form-group">
                 <%= f.label :issue_id, "Issue" %>
  -              <%= f.select :issue_id, [], {}, class: "form-control", id: "article_issue_id" %>
  +              <%= f.select :issue_id, [], {}, class: "form-control js-issue-selector" %>
               </div>
             </div>
           </div>
   
           <div class="form-group">
             <%= f.label :category_id %>
  -          <%= f.select :category_id, [], { prompt: "Select a Category" }, { class: 'form-control' } %>
  +          <%= f.select :category_id, [], {}, { class: 'form-control js-category-selector' } %>
           </div>
   
           <div class="form-group">
  
positive.code:   $(document).ready(function() {
      $( "#article_date" ).datepicker({ changeYear: true, changeMonth: true, dateFormat: "yy-mm-dd"});
    });
    </script>
  <% end %>
  <div class="panel-body">
  
negative.code: <% javascript '/djs/dynamic_dates' %>
  <%= content_for :scripts do %>
    <script type="text/javascript">
  