Asynchronous Google Analytics snippets

JavaScript performance comparison

Revision 10 of this test case created

Info

Test case which measures the speed difference between the default asynchronous Google Analytics snippet and the optimized version.

Note that I commented out the s.parentNode.insertBefore(g, s); line in both scripts, since otherwise the <script> element gets inserted a few thousand times every time you run the tests. Since this code is the same in both scripts, it shouldn’t have an influence on the results.

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Testing in unknown unknown
Test Ops/sec
Default snippet
 
var _gaq = _gaq || [];
_gaq.push(['_setAccount', 'UA-XXXXX-X']);
_gaq.push(['_trackPageview']);
(function() {
 var ga = document.createElement('script');
 ga.type = 'text/javascript';
 ga.async = true;
 ga.src = ('https:' == document.location.protocol ? 'https://ssl' : 'http://www') + '.google-analytics.com/ga.js';
 var s = document.getElementsByTagName('script')[0];
 // s.parentNode.insertBefore(ga, s);
})();
 pending…
Optimized snippet
 
var _gaq = [
 ['_setAccount', 'UA-XXXXX-X'],
 ['_trackPageview']
];
(function(d, t) {
 var g = d.createElement(t),
     s = d.getElementsByTagName(t)[0];
 g.async = 1;
 g.src = '//www.google-analytics.com/ga.js';
 // s.parentNode.insertBefore(g, s);
}(document, 'script'));
 pending…
my
 
var _gaq = [
 ['_setAccount', 'UA-XXXXX-X'],
 ['_trackPageview']
];
(function() {
 var g = document.createElement('script'),
     s = document.getElementsByTagName('script')[0];
 g.type = 'text/javascript';
 g.async = true;
 g.src = 'http://www.google-analytics.com/ga.js';
 // s.parentNode.insertBefore(g, s)
})();
 pending…
another test
 
  var _gaq = _gaq || [];
  _gaq.push(['_setAccount', 'UA-XXXXX-X']);
  _gaq.push(['_trackPageview']);

  (function() {
    var ga = document.createElement('script'); ga.type = 'text/javascript'; ga.async = true;
    ga.src = ('https:' == document.location.protocol ? 'https://ssl' : 'http://www') + '.google-analytics.com/ga.js';
    var s = document.getElementsByTagName('script')[0]; // s.parentNode.insertBefore(ga, s);
  })();
 pending…
min
 
var _gaq=[['_setAccount','UA-XXXXX-X'],['_trackPageview']];(function(d,t){var g=d.createElement(t),s=d.getElementsByTagName(t)[0];g.src='//www.google-analytics.com/ga.js';}(document,'script'));
 pending…
min (w protocol check)
 
var _gaq=[['_setAccount','UA-XXXXX-X'],['_trackPageview']];(function(d,t){var g=d.createElement(t),s=d.getElementsByTagName(t)[0];g.src=('https:'==location.protocol?'//ssl':'//www')+'.google-analytics.com/ga.js';}(document,'script'));
 pending…
min (w push)
 
var _gaq = [];
_gaq.push(['_setAccount', 'UA-XXXXX-X']);
_gaq.push(['_trackPageview']);
(function(d,t){var g=d.createElement(t),s=d.getElementsByTagName(t)[0];g.src='//www.google-analytics.com/ga.js';}(document,'script'));
 pending…
min (w push) 2
 
var _gaq = [['_setAccount', 'UA-XXXXX-X']];
_gaq.push(['_trackPageview']);
(function(d,t){var g=d.createElement(t),s=d.getElementsByTagName(t)[0];g.src='//www.google-analytics.com/ga.js';}(document,'script'));
 pending…
min (w push) 3
 
var _gaq = [];
_gaq.push(['_setAccount', 'UA-XXXXX-X'], ['_trackPageview']);
(function(d,t){var g=d.createElement(t),s=d.getElementsByTagName(t)[0];g.src='//www.google-analytics.com/ga.js';}(document,'script'));
 pending…

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