j-counter.js

//GA-counter:
  (function(i,s,o,g,r,a,m){i['GoogleAnalyticsObject']=r;i[r]=i[r]||function(){
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  })(window,document,'script','//www.google-analytics.com/analytics.js','ga');
  ga('create', 'UA-81706562-21', 'auto');
  ga('require', 'displayfeatures');
  
  try {
    var args = JSON.parse(location.search.match(/custom_args=(.+)($|&)/)[1]);
    [ 'campaignName'
    , 'campaignSource'
    , 'campaignMedium'
    , 'campaignContent'
    ].forEach(function (argName) {
      ga('set', argName, args[argName]);
    })
  } catch (err) {}
  ga('set', 'location', location.protocol + '//' + location.host + location.pathname);
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  ga('send', 'pageview', '/');
/***
ok.ru/game/gamename?custom_args={uri_encoded_json}, где uri_encoded_json:
encodeURIComponent(`{
  "campaignName": "",
  "campaignSource": "",
  "campaignMedium": "",
  "campaignContent": ""
}`)
***/

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