MediaWiki:Common.js/ga.js — различия между версиями

Версия 05:17, 26 апреля 2014

/**
 * Creates a temporary global ga object and loads analy  tics.js.
 * Paramenters o, a, and m are all used internally.  They could have been declared using 'var',
 * instead they are declared as parameters to save 4 bytes ('var ').
 *
 * @param {Window}      i The global context object.
 * @param {Document}    s The DOM document object.
 * @param {string}      o Must be 'script'.
 * @param {string}      g URL of the analytics.js script. Inherits protocol from page.
 * @param {string}      r Global name of analytics object.  Defaults to 'ga'.
 * @param {DOMElement?} a Async script tag.
 * @param {DOMElement?} m First script tag in document.
 */
(function(i, s, o, g, r, a, m){
  i['GoogleAnalyticsObject'] = r; // Acts as a pointer to support renaming.

  // Creates an initial ga() function.  The queued commands will be executed once analytics.js loads.
  i[r] = i[r] || function() {
    (i[r].q = i[r].q || []).push(arguments)
  },

  // Sets the time (as an integer) this tag was executed.  Used for timing hits.
  i[r].l = 1 * new Date();

  // Insert the script tag asynchronously.  Inserts above current tag to prevent blocking in
  // addition to using the async attribute.
  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-26921269-3', 'psylab.info'); // Creates the tracker with default parameters.
ga('require', 'displayfeatures');             // Display Advertising Features in Google Analytics.
ga('require', 'linkid', 'linkid.js'};         // Load the plug-in. Note: this call will block until the plug-in is loaded.
ga('send', 'pageview');                       // Sends a pageview hit.