Adds the noindex meta tag to all pages on the Help Center, except the home page

hc_add_robots.js

<script type="text/javascript">
  //prevents all pages, except the home page, from being indexed by search engines
  if(window.location.pathname.match(/\/hc\/(.*)\/([a-z])/)) {
    var meta = document.createElement('meta');
    meta.name = 'robots';
    meta.content = 'noindex';
    document.getElementsByTagName('head')[0].appendChild(meta);
  }
</script>