screw jquery

content/assets/scripts/gamification.coffee

@@ -1,4 +1,11 @@
-  $.getJSON 'https://zeus.ugent.be/game/top4/show.json', (data) ->
+request = new XMLHttpRequest
+request.open 'GET', 'https://zeus.ugent.be/game/top4/show.json', true
+
+request.onload = ->
+  if request.status >= 200 and request.status < 400
+    # Success!
+    data = JSON.parse(request.responseText)
+
     str = "<table>"
     for x in data
         str += """
@@ -16,4 +23,14 @@
         """
     str += "</table>"
 
-    $('#gamification-coders').html(str)
+    el = document.getElementById('gamification-coders')
+    el.innerHTML = str
+  else
+    # We reached our target server, but it returned an error
+  return
+
+request.onerror = ->
+  # There was a connection error of some sort
+  return
+
+request.send()

content/index.erb

@@ -5,7 +5,6 @@
 <% end %>
 
 <% content_for :scripts do %>
-<script src="https://code.jquery.com/jquery-3.0.0.min.js" charset="utf-8"></script>
 <%= asset :js, :gamification %>
 <% end %>