fathom/assets/js/tracker.js

57 lines
1.1 KiB
JavaScript

'use strict';
var queue = window.ana.q || [];
var trackerUrl = '//ana.dev/collect';
var commands = {
"trackPageview": trackPageview,
"setTrackerUrl": setTrackerUrl,
};
// convert object to query string
function stringifyObject(json) {
var keys = Object.keys(json);
// omit empty
keys = keys.filter(function(k) {
return json[k].length > 0;
});
return '?' +
keys.map(function(k) {
return encodeURIComponent(k) + '=' +
encodeURIComponent(json[k]);
}).join('&');
}
function setTrackerUrl(v) {
trackerUrl = v;
}
function trackPageview() {
if( navigator.DonotTrack == 1 ) {
return;
}
var d = {
l: navigator.language,
p: location.pathname + location.search,
sr: screen.width + "x" + screen.height,
t: document.title,
r: document.referrer
};
var i = document.createElement('img');
i.src = trackerUrl + stringifyObject(d);
document.body.appendChild(i);
}
// override global ana object
window.ana = function() {
var args = [].slice.call(arguments);
var c = args.shift();
commands[c].apply(this, args);
};
// process existing queue
queue.map((i) => ana.apply(this, i));