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February 24, 2020 15:28
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Save nico-martin/75b39c418b71b734d2ddeff5a8e94c5f to your computer and use it in GitHub Desktop.
This little snippet provides a simple way to a) implement Google Tag Manager with anonymized IP and b) provide a Opt-Out / Opt-In mechanism: gtagOptOutIn();
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<script async src="https://www.googletagmanager.com/gtag/js?id=UA-XXXXXXXX-X"></script> | |
<script> | |
window.gtagTrackingID = 'UA-XXXXXXXX-X'; | |
window.gtagDisableStr = 'gtag-disable-' + gtagTrackingID; | |
window.dataLayer = window.dataLayer || []; | |
function gtag() { | |
dataLayer.push(arguments); | |
} | |
function gtagIsDisabled() { | |
return (document.cookie.indexOf(gtagDisableStr + '=true') > -1); | |
} | |
function gtagOptOutIn() { | |
if (gtagIsDisabled()) { | |
document.cookie = gtagDisableStr + "=-10; path=/"; | |
window['ga-disable-' + gtagTrackingID] = false; | |
} else { | |
document.cookie = gtagDisableStr + '=true; expires=Thu, 31 Dec 2099 23:59:59 UTC; path=/'; | |
window['ga-disable-' + gtagTrackingID] = true; | |
} | |
} | |
window['ga-disable-' + gtagTrackingID] = false; | |
if (gtagIsDisabled()) { | |
window['ga-disable-' + gtagTrackingID] = true; | |
} | |
gtag('js', new Date()); | |
gtag('config', gtagTrackingID, { | |
'anonymize_ip': true | |
}); | |
</script> |
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