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// Create the test | |
var pixelRatio = (window.devicePixelRatio >= 1.5) ? "high" : "normal"; | |
.. | |
// Pass it along through GA | |
var _gaq = _gaq || []; | |
_gaq.push(['_setAccount', 'UA-xxxxxxxx-x']); | |
// --- IMPORTANT LINE! | |
// params: event method, custom variable slot, variable name, variable value, scope level | |
// more info: https://developers.google.com/analytics/devguides/collection/gajs/gaTrackingCustomVariables | |
_gaq.push(['_setCustomVar', 1, 'Pixel Ratio', pixelRatio, 2 ]); | |
// Then start the trackin' | |
_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); | |
})(); |
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