Evan Genest's Learning Log

I keep notes here. Most of these are related to travel, work, or books.

Quick survey of the Javascript loaded by the Tealium demo page

web analytics

Analyzing the Tealium eCommerce Demo Page

Visit the page

Tealium has a fake page for playing with tag placement: https://ecommerce.tealiumdemo.com/
I'm just interested in which JS is running gthe Tealium web analytics.

List all of the scripts that get loaded 

<script type="text/javascript" src="https://ecommerce.tealiumdemo.com/js/prototype/prototype.js"></script>
<script type="text/javascript" src="https://ecommerce.tealiumdemo.com/js/lib/jquery/jquery-1.12.1.min.js"></script>
<script type="text/javascript" src="https://ecommerce.tealiumdemo.com/js/lib/jquery/noconflict.js"></script>
<script type="text/javascript" src="https://ecommerce.tealiumdemo.com/js/lib/ccard.js"></script>
<script type="text/javascript" src="https://ecommerce.tealiumdemo.com/js/prototype/validation.js"></script>
<script type="text/javascript" src="https://ecommerce.tealiumdemo.com/js/scriptaculous/builder.js"></script>
<script type="text/javascript" src="https://ecommerce.tealiumdemo.com/js/scriptaculous/effects.js"></script>
<script type="text/javascript" src="https://ecommerce.tealiumdemo.com/js/scriptaculous/dragdrop.js"></script>
<script type="text/javascript" src="https://ecommerce.tealiumdemo.com/js/scriptaculous/controls.js"></script>
<script type="text/javascript" src="https://ecommerce.tealiumdemo.com/js/scriptaculous/slider.js"></script>
<script type="text/javascript" src="https://ecommerce.tealiumdemo.com/js/varien/js.js"></script>
<script type="text/javascript" src="https://ecommerce.tealiumdemo.com/js/varien/form.js"></script>
<script type="text/javascript" src="https://ecommerce.tealiumdemo.com/js/mage/translate.js"></script>
<script type="text/javascript" src="https://ecommerce.tealiumdemo.com/js/mage/cookies.js"></script>
<script type="text/javascript" src="https://ecommerce.tealiumdemo.com/skin/frontend/rwd/default/js/lib/modernizr.custom.min.js"></script>
<script type="text/javascript" src="https://ecommerce.tealiumdemo.com/skin/frontend/rwd/default/js/lib/selectivizr.js"></script>
<script type="text/javascript" src="https://ecommerce.tealiumdemo.com/skin/frontend/rwd/default/js/lib/matchMedia.js"></script>
<script type="text/javascript" src="https://ecommerce.tealiumdemo.com/skin/frontend/rwd/default/js/lib/matchMedia.addListener.js"></script>
<script type="text/javascript" src="https://ecommerce.tealiumdemo.com/skin/frontend/rwd/default/js/lib/enquire.js"></script>
<script type="text/javascript" src="https://ecommerce.tealiumdemo.com/skin/frontend/rwd/default/js/app.js"></script>
<script type="text/javascript" src="https://ecommerce.tealiumdemo.com/skin/frontend/rwd/default/js/lib/jquery.cycle2.min.js"></script>
<script type="text/javascript" src="https://ecommerce.tealiumdemo.com/skin/frontend/rwd/default/js/lib/jquery.cycle2.swipe.min.js"></script>
<script type="text/javascript" src="https://ecommerce.tealiumdemo.com/skin/frontend/rwd/default/js/slideshow.js"></script>
<script type="text/javascript" src="https://ecommerce.tealiumdemo.com/skin/frontend/rwd/default/js/lib/imagesloaded.js"></script>
<script type="text/javascript" src="https://ecommerce.tealiumdemo.com/skin/frontend/rwd/default/js/minicart.js"></script>
<script type="text/javascript" src="https://ecommerce.tealiumdemo.com/skin/frontend/base/default/js/msrp.js"></script>
<script type="text/javascript" src="https://ecommerce.tealiumdemo.com/skin/frontend/rwd/default/js/msrp_rwd.js"></script>
  var _syncstr = "https://tags.tiqcdn.com/utag/" + o.account + "/" + o.profile + "/" + o.env +"/utag.sync.js";

I am only interested in what talks to Tealium.

Most of that Javascript is just libraries for making the page work:
MSRP is for sockets and streams (Message Session Relay Protocol).
Scriptaculous is a JQuery type thing, kind of from the same era.
JQuery is JQuery.
RWD is a library for Responsive Web Design.
Mage may be connected to the Node.js game framework? Maybe?
Varien is a library that's been around, especially used for ecommerce, like form validation, I think.

That leaves

<script type="text/javascript" src="https://ecommerce.tealiumdemo.com/js/prototype/prototype.js"></script>
<script type="text/javascript" src="https://ecommerce.tealiumdemo.com/js/lib/ccard.js"></script>
<script type="text/javascript" src="https://ecommerce.tealiumdemo.com/js/prototype/validation.js"></script>
  var _syncstr = "https://tags.tiqcdn.com/utag/" + o.account + "/" + o.profile + "/" + o.env +"/utag.sync.js";

That last line seems to be the money shot for our purposes:

For a 404 error (https://tags.tiqcdn.com/utag/foooo/barrrrr/bazzzzz/utag.sync.js) the server returns zero characters, other than the commented header:

//tealium universal tag - utag.sync ut4.0.202110291804, Copyright 2021 Tealium.com Inc. All Rights Reserved.

However if the o object is intialized with:
{
"account": "tealiumlabs",
"profile": "commerce",
"env": "prod"
}

the Tealium server returns:

//tealium universal tag - utag.sync ut4.0.202109220846, Copyright 2021 Tealium.com Inc. All Rights Reserved.
try {
    try {
        window.optimizely = window.optimizely || [];
        var __tealium_va = JSON.parse(localStorage.getItem('tealium_va'));
        if (__tealium_va && __tealium_va.badges) {
            if (__tealium_va.badges['5142']) {
                window.optimizely.push(['addToAudience', 8008019481]);
            };
            if (__tealium_va.badges['5127']) {
                window.optimizely.push(['addToAudience', 3245770086]);
            };
        }
        document.write('<scr' + 'ipt type="text/javascript" src="//cdn.optimizely.com/js/7777000011.js"></scr' + 'ipt>');

    } catch (e) { console.log(e) }
} catch (e) {
    console.log(e);
}

Minor: those lines seem to redundantly wrap try-catch (2x) -- maybe as a weird bug fix for something?
Minor: those lines check which badges are present (5142 present? 5127 present?), and if they are, loads 'addToAudience' for each onto the __tealium_va object.

Major: the whole point here is to load the main Tealium client-side product, 12000 lines of Javascript, from https://cdn.optimizely.com/js/7777000011.js.
View a prettified version of this at
https://github.com/atom-box/7777000011