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function isDoNotTrackEnabled() {
if (typeof window === 'undefined') return false
const {doNotTrack, navigator} = window
// Do Not Track Settings across browsers
const dnt = (doNotTrack || navigator.doNotTrack || navigator.msDoNotTrack)
if (!dnt) return false
return dnt === true ||
dnt === 1 ||
dnt === 'yes' ||
(typeof dnt === 'string' && dnt.charAt(0) === '1');
}
if (isDoNotTrackEnabled()) {
// Skip analytics for users with Do Not Track enabled
console.info('[TRACKING]: Respecting DNT with respect to analytics...')
} else {
// Known DNT values not set, so we will assume it's off.
const data = JSON.parse(document.getElementById('ed-data').innerHTML)
if (typeof data !== 'undefined' && data.analytics_code) {
(function () {
// New Google Site Tag (gtag.js) tagging/analytics framework
// See: https://developers.google.com/gtagjs
const base_url = 'https://www.googletagmanager.com'
let script = document.createElement("script");
script.src = base_url + "/gtag/js?id=" + data.analytics_code;
script.type = "text/javascript";
script.async = true;
document.getElementsByTagName("head")[0].appendChild(script);
}())
window.dataLayer = window.dataLayer || [];
function gtag() {
dataLayer.push(arguments);
}
function trackOutboundLink(url, target) {
gtag('event', 'click', {
'event_category': 'outbound',
'event_label': url,
'transport_type': 'beacon',
'event_callback': function () {
if (target !== '_blank') {
document.location = url;
}
}
});
}
function trackInternalEvent(label, category) {
gtag('event', 'click', {
'event_label': label,
'event_category': category
});
}
function onClickCallback(event) {
const className = event.target.getAttribute('class');
if (className === 'sidebar-toggle') {
trackInternalEvent('Sidebar Toggle', 'navigation');
return;
}
// Track only external URLs.
if ((event.target.tagName !== 'A') || (event.target.host === window.location.host)) {
return;
}
// Send GA event.
trackOutboundLink(
event.target,
event.target.getAttribute('target')
);
}
gtag('js', new Date());
// Setup the project analytics code and send a pageview
gtag('config', data.analytics_code, {
'page_title': data.page_title,
'anonymize_ip': true,
'cookie_expires': 30 * 24 * 60 * 60 // 30 days, in seconds
})
gtag('set', {'cookie_flags': 'SameSite=None;Secure'});
// Outbound link tracking.
document.addEventListener('click', onClickCallback, false);
}
}
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