js.html

{% capture javascriptTag %}{% javascript bundle %}{% endcapture %}
<script type="text/javascript">
// delay loading of all JS assets only after first render
function downloadJSAtOnload() {
  var element = document.createElement("script");
  element.src = "{{ javascriptTag | replace: '<script type="text/javascript" src="', '' | replace: '"></script>', '' }}";
  document.body.appendChild(element);
}
if (window.addEventListener)
  window.addEventListener("load", downloadJSAtOnload, false);
else if (window.attachEvent)
  window.attachEvent("onload", downloadJSAtOnload);
else window.onload = downloadJSAtOnload;
</script>

{% if jekyll.environment == "production" %}
<script>
(function(i,s,o,g,r,a,m){i['GoogleAnalyticsObject']=r;i[r]=i[r]||function(){
  (i[r].q=i[r].q||[]).push(arguments)},i[r].l=1*new Date();a=s.createElement(o),
    m=s.getElementsByTagName(o)[0];a.async=1;a.src=g;m.parentNode.insertBefore(a,m)
})(window,document,'script','//www.google-analytics.com/analytics.js','ga');

ga('create', 'UA-42008737-1', 'scala-js.org');
ga('send', 'pageview');
</script>
{% endif %}