jQuery(function($) {
// Debug flag
var debugMode = true;
// Default time delay before checking location
var callBackTime = 100;
// # px before tracking a reader
var readerLocation = 150;
// Set some flags for tracking & execution
var timer = 0;
var scroller = false;
var endContent = false;
var didComplete = false;
// Set some time variables to calculate reading time
var startTime = new Date();
var beginning = startTime.getTime();
var totalTime = 0;
// Get some information about the current page
var pageTitle = document.title;
// Track the aticle load
if (!debugMode) {
_gaq.push(['_trackEvent', 'Reading', 'ArticleLoaded', '', , true]);
} else {
alert('The page has loaded. Woohoo.');
}
// Check the location and track user
function trackLocation() {
bottom = $(window).height() + $(window).scrollTop();
height = $(document).height();
// If user starts to scroll send an event
if (bottom > readerLocation && !scroller) {
currentTime = new Date();
scrollStart = currentTime.getTime();
timeToScroll = Math.round((scrollStart - beginning) / 1000);
if (!debugMode) {
_gaq.push(['_trackEvent', 'Reading', 'StartReading', '', timeToScroll]);
} else {
alert('started reading ' + timeToScroll);
}
scroller = true;
}
// If user has hit the bottom of the content send an event
if (bottom >= $('.entry-content').scrollTop() + $('.entry-content').innerHeight() && !endContent) {
currentTime = new Date();
contentScrollEnd = currentTime.getTime();
timeToContentEnd = Math.round((contentScrollEnd - scrollStart) / 1000);
if (!debugMode) {
_gaq.push(['_trackEvent', 'Reading', 'ContentBottom', '', timeToContentEnd]);
} else {
alert('end content section ' + timeToContentEnd);
}
endContent = true;
}
// If user has hit the bottom of page send an event
if (bottom >= height && !didComplete) {
currentTime = new Date();
end = currentTime.getTime();
totalTime = Math.round((end - scrollStart) / 1000);
if (!debugMode) {
if (totalTime < 60) {
_gaq.push(['_setCustomVar', 5, 'ReaderType', 'Scanner', 2]);
} else {
_gaq.push(['_setCustomVar', 5, 'ReaderType', 'Reader', 2]);
}
_gaq.push(['_trackEvent', 'Reading', 'PageBottom', pageTitle, totalTime]);
} else {
alert('bottom of page ' + totalTime);
}
didComplete = true;
}
}
// Track the scrolling and track location
$(window).scroll(function() {
if (timer) {
clearTimeout(timer);
}
// Use a buffer so we don't call trackLocation too often.
timer = setTimeout(trackLocation, callBackTime);
});
});
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