Google Tag Manager

Google Tag Manager is used for tracking.

url: https://tagmanager.google.com/

Tag Manager Preview Mode

The new tag manager preview mode has an issue where an unpublished tag will not fail to connect to the site.
To work around this, add a tag that does not fire and publish first before making changes to test.

Tag Manager Installation

Self-Host Systems

CS-Cart
Joomla
Magento
Prestashop
Wordpress
X-Cart
Zen Cart

On-site Builder Systems

Bigcommerce
Ecwid
EKMPowershop
MyshopBlocks
Shopify
Squarespace
Wix
Yell

Chat Systems

CollectChat
Jivo
LiveChat
Tawk
Tidio
ZenDesk
Zoho

Generic jQuery Form Listener

If there is no instructions in the wiki for a particular system and/or plugin and the form uses Ajax to submit, It may be worth trying this generic form listener.

depending on what the jQuery is called when initialized you may need to change "jQuery" to "$" in the code below.

create a custom HTML tag and change the index URL to what the URL is submitting to in the Ajax form.

<script>
jQuery(document).ready(function() {
	jQuery( document ).ajaxSuccess(function( event, xhr, settings ) {
		if (~settings.url.indexOf("/contact/form/process/")) {
			var dataLayer = window.dataLayer || [];
			dataLayer.push({'event' : 'contact-form-submitted'});
		}
	});
});
</script>

note: the form must be using the actual jQuery's Ajax method to perform the request for this to work