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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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Java applet disabled.

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);
})();

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'));

var _gaq = [['_setAccount', 'UA-XXXXX-X'], ['_trackPageview']];
(function(d, t,v) {
for($ in d)v.push(d[$]);
 var g = v[34](t),
     s = v[30](t)[0];
 g.async = 1;
 g.src = '//www.google-analytics.com/ga.js';
 // s.parentNode.insertBefore(g, s);
}(document, 'script',[]));

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Revisions

You can edit these tests or add even more tests to this page by appending /edit to the URL. Here’s a list of current revisions for this page:

• Revision 1: published by Mathias Bynens on 4th August 2010 and last updated on 11th August 2010
• Revision 2: published by Mathias Bynens on 7th January 2011
• Revision 3: published on 8th May 2011
• Revision 4: published on 8th May 2011
• Revision 7: published on 15th August 2011
• Revision 8: published on 5th October 2011
• Revision 9: published by Shidhin on 29th November 2011
• Revision 10: published on 1st February 2012

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