Merge pull request #248 from alphagov/ensure_js_status

Degrade gracefully when external JS can’t be loaded
alphagov · Sep 12, 2016 · 94c0f7f · 94c0f7f
2 parents cde9158 + 4b0afef
commit 94c0f7f
Showing 1 changed file with 3 additions and 0 deletions.
diff --git a/source/views/layouts/govuk_template.html.erb b/source/views/layouts/govuk_template.html.erb
@@ -101,5 +101,8 @@
     <script src="<%= asset_path "govuk-template.js" %>"></script>
 
     <%= yield :body_end %>
+
+    <%# if no GOVUK-namespaced module has loaded we can assume JS has failed and remove the class %>
+    <script>if (typeof window.GOVUK === 'undefined') document.body.className = document.body.className.replace('js-enabled', '');</script>
   </body>
 </html>