Forked from DavidKuennen/minimal-analytics-snippet.js
Created
December 15, 2018 16:51
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Minimal Analytics Snippet
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(function (history, trackingId, options) { | |
const generateId = () => { | |
return '_' + Math.random().toString(36).substr(2, 9); | |
}; | |
const getId = () => { | |
if (!localStorage.cid) { | |
localStorage.cid = generateId() | |
} | |
return localStorage.cid; | |
}; | |
const serialize = (obj) => { | |
var str = []; | |
for (var p in obj) { | |
if (obj.hasOwnProperty(p)) { | |
if(obj[p] !== undefined) { | |
str.push(encodeURIComponent(p) + "=" + encodeURIComponent(obj[p])); | |
} | |
} | |
} | |
return str.join("&"); | |
}; | |
const pageView = () => { | |
setTimeout(() => { | |
const data = { | |
v: '1', | |
aip: options.anonymizeIp ? 1 : undefined, | |
tid: trackingId, | |
cid: getId(), | |
t: 'pageview', | |
sd: options.colorDepth && screen.colorDepth ? `${screen.colorDepth}-bits` : undefined, | |
dr: document.referrer || undefined, | |
dt: document.title, | |
dl: document.location.origin + document.location.pathname + document.location.search, | |
ul: options.language ? (navigator.language || "").toLowerCase() : undefined, | |
de: options.characterSet ? document.characterSet : undefined, | |
sr: options.screenSize ? `${(window.screen || {}).width}x${(window.screen || {}).height}` : undefined, | |
vp: options.screenSize && window.visualViewport ? `${(window.visualViewport || {}).width}x${(window.visualViewport || {}).height}` : undefined | |
}; | |
var xhr = new XMLHttpRequest(); | |
xhr.open("GET", `https://www.google-analytics.com/collect?${serialize(data)}&z=${Math.random()}`, true); | |
xhr.send(null); | |
}, 10); | |
}; | |
const pushState = history.pushState; | |
history.pushState = function (state) { | |
if (typeof history.onpushstate == "function") { | |
history.onpushstate({ state: state }); | |
} | |
pageView() | |
return pushState.apply(history, arguments); | |
} | |
pageView(); | |
})(window.history, "XX-XXXXXXXXX-X", { | |
anonymizeIp: true, | |
colorDepth: true, | |
characterSet: true, | |
screenSize: true, | |
language: true | |
}); |
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