Hash-based tracking links

track-hashes.js

/*
    Tracking links that use hashes rather than query parameters.
    Improves privacy by not including campaign data in referral-out links.
    Improves CDN/proxy privacy by not sharing campaign data with them. Also improves caching!
    Tracking links can (optionally) be removed from URLbar/history without a redirect.
    
    Example links:
    /document#s:feed
    /document#s:email
*/

if (document.location.hash && document.location.hash.startsWith('#s:'))
{
  var source = document.location.hash.split(':')[1];
  // TODO: add source to tracking object.
  if (history!==undefined)
  {
    history.replaceState({}, document.location.toString(),
                             document.location.toString().replace(document.location.hash,''));
} }