Redirecting jekyll site to https

A quick jekyll tip:

To redirect any page in the jekyll site to https, use the following code in head.html include.

With jekyll serve, the https redirect is not used since the server doesn’t use https.

{% if site.url contains "localhost" %}
  <!-- left out https redirect -->
{% else %}
  if (window.location.protocol == 'http:') {
    window.location.href = 'https:' + window.location.href.substring(window.location.protocol.length);
{% endif %}