ruby on rails - Select all checkboxes

Question

In my Rails app I've created a set of checkboxes as follows:

<div class="form_row">
        <label for="features[]">Features:</label>
        <% ['scenarios', 'news', 'role_profiles', 'private_messages', 'chatrooms', 'forums', 'polls'].each do |feature| %>
        <br><%= check_box_tag 'features[]', feature, (@features || {}).include?(feature) %>
        <%= feature.humanize %>
        <% end %>
</div>

I'd like to know how to create a button that would "Select All".

Answer 1

Using jQuery;

<script type="text/javascript">
      function selectAll(){
        $("input:checkbox").each(function(){
          $(this).attr('checked', true);
        });

        return false;
      }
</script>

HTML button:

<a href="#" onclick="selectAll()">Select All</a>