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April 5, 2017

Following is an example of an array of undefined values: We use a comma in place of value to create an undefined value. History Source: This variable returns a string which refers to the event that initiated the history change. dataLayer in GTM is an array of a single object. In JavaScript, arrays use numbered indexes whereas objects use named indexes. Data layers should be hard-coded on a website by your developer or IT team. You can give any name to your array. ", Maths and Stats for Web Analytics and Conversion Optimization, Master the Essentials of Email Marketing Analytics, Attribution Modelling in Google Analytics and Beyond, Attribution Modelling in Google Ads and Facebook, User type (logged-in user, logged-out user, member, non-member, customer, non-customer, repeat customer, high-value repeat customer, etc), Users’ interactions (clicking a button, submitting forms, signups, purchase, watching videos, etc). The array literal notation is preferred, for creating arrays. “www.abc.com/products/newsunglasses”, Page Hostname: Provides the hostname portion of the current page. These elements can be strings (like ‘hello’), numeric values (like 10), undefined values, Boolean values (like true, false), other arrays or objects. The following list will give you an idea of supported user-defined variables. Constant: This variable returns a constant number. Each tag management solution (TMS) provider, implement the data layer in a slightly different way. Let us suppose the following data layer is hardcoded in the head section (…. of a web page. For example, for ecommerce tracking or enhanced ecommerce tracking, we use the first method, as we want the ecommerce data to be available on page load. If you want to avoid the hassle of modifying data layers every time you deploy a new GTM solution then you should aim to hard-code one. Following are the various built-in variables available in GTM: Page URL: Provides/returns the full URL of the current page. Google Tag Manager is available only to stores on the Shopify Plus plan. Edit/Publish access in your Google Tag Manager container; Access to the back-end code of your website; You’ll want to start the process by opening Google Tag Manager. utm_medium. An array variable can also be used to store one or more objects. That means they exist, as long as a user remains on the same page. Learn about Google Tag Manager technology, including integration with most website tags directly or through custom code, triggers, and more. Initializing a data layer with one variable: Initializing a data layer with two variables: Initializing a data layer with three variables: Appending/passing messages onto the data layer queue => Adding data layer variables to the data layer. If you’re in need of a simple, modern-looking WordPress theme. In the context of programming there are three different types of layers (also called ‘logic’): The presentation layer corresponds to the user interface. To store all the key information your marketing and analytics tags currently need like. Q. No. Form Classes: This variable returns the String contained in the ‘class’ attribute of the form element that was clicked. Through the ‘push’ method of dataLayer object, you can dynamically add object(s) to your data layer. In order to create a new user-defined variable, follow below steps. Auto-event variable: this variable identifies auto events like click, form submission, element visibility on the website and returns parameters associated with the event. Here ‘price‘ is the name of the property of the object ‘a’ and ‘164900.00‘ is the value of the ‘price’ property which is a numerical value. When you are installing Google Tag Manager on your website, you are basically installing a container tag. At this point, you’ve successfully added Google Tag Manager to WordPress. Keep this window open because you’ll need to add both of these code snippets to your WordPress site in the next section: This is the one part that’s kind of tricky. Another thing worth noting is that the data layer above contains some dynamic data layer variables, near the end like VisitorsAge, VisitorsEmail, VisitorsGender, etc. Container Version: Provides the current version number of the container, as a String. So no matter what happens to HTML DOM, the data layer will remain the same and your tags will continue to work (unless of course, someone/ something breaks the data layer itself). It should also include all the key information you may need in the near future, for additional tracking. But for most sites? This is the same as the dataLayer.push() method but with an added advantage. You would need the help of a web developer to create ecommerce data layers. Once you set up a data layer, the container tag should be used, to pull data from the data layer of a page instead of its HTML DOM (the presentation layer). {“id”:”20″,”name”:”Zapatos”} is an array element of type object. ?> It’s like a virtual layer of your website which contains various data points (Get it? From the Overview page of this container's workspace, click the container ID (formatted like "GTM-XXXXXX") in the toolbar. But Google Tag Manager is pretty deep in functionality and explaining the huge number of interface options goes beyond the scope of this post. Use the Google Tag Generator to generate tag automatically. Note: You can give any name to the JavaScript object. The ecommerce data layer pulls ecommerce data from your shopping cart (via a server-side script) and then sends the data to GTM. Each tag management solution (TMS) provider, implement the data layer in a slightly different way. Function gtm_head_code(){ Been looking for a great but inexpensive option for Manage WordPr, If you’re in search of a WordPress hosting company that deliver. Give your company a name: Then, in the Setup Container section, enter your website’s name in the Container name field and choose Web: Once you accept Google’s Terms of Service, Google should take you to the Google Tag Manager interface and show you two code snippets. Here the array named ‘a’ contains the following two elements of type ‘array’: You can access an array element by referring to its index number. Step-3: In Variable Configuration you will several types of user-defined variables as below (Click on the type of variable you want to create). In order to enable and use the various built-in variables follow the steps below: Step-2: Click on the ‘Variables’ link in the left-hand side navigation menu. If your data layer doesn’t get any/all of these events then it means something has gone wrong with your tag manager implementation. When Google Tag Manager code is placed on your website, it automatically creates a Data Layer. tax and shipping). For example, if ‘a’ is the name of a variable, then ‘a’ can be used to store a value like ’10’ and then at a different point in time, can be used to store another value like ’20’. There are two methods that can be used to push information into a data layer: And for more related reading on some of the tags you can implement in Google Tag Manager, check out our posts on Google Analytics and WooCommerce Google Analytics goals. Use the same 

ID consistently for a given position on a page, as it is used for optimization in a wide range of areas. gtm.dom is a DOM file used by the container tag. Following is an example of a data layer which contains no variable: Following is an example of a data layer which contains one variable: Following is an example of a data layer which contains two variables: Since white spaces and line breaks are not important in JavaScript, so to improve readability you can re-write the data layer as: Following is an example of a data layer which contains three variables: Here, PageCategory, visitorType and event are the names of the data layer variables. These inline GPT examples do not support SRA. Then, go to Settings → Header and Footer in your WordPress dashboard to access the plugin’s interface. What is the scope of data layer variables? In the context of Google Tag Manager, a data layer is usually an array of a single object: Following is an example of a data layer which contains one element: dataLayer = [{ ‘pageCategory’: ‘Statistics’ }]; Following is an example of a data layer which contains two elements: dataLayer = [{ ‘pageCategory’: ‘Statistics’, ‘visitorType’: ‘high-value’ }]; Following is an example of a data layer which contains more than two elements: Congratulations, you have just created your first complex data layer. Then, I’ll give you a quick guide for how you can publish your first tag and make sure it’s working. I recommend that you make these as detailed as possible to help with version control later on. It enables Tag Manager to fire tags by inserting gtm.js into the page (or through the use of an iframe when JavaScript isn't available).. To implement Google Tag Manager on your website: Use an inline tag to define where the ad unit appears on the page, rather than using the page header. With its help, Google Tag Manager is able to read, push, and transfer data between your website and other tracking tools. Learn more about the Ad Manager inventory structure, ad unit hierarchy, and how ad units inherit targeting in the inventory overview. If you want to make sure the individual tags in your container are firing, Google offers a free browser extension for Chrome called Tag Assistant. Google Tag Manager is a free and simple solution for installing and managing all of your marketing and analytics tracking pixels. It is in the format: ‘variable_name’: ‘variable_value’. Using Google Tag Manager (GTM) to help implement Facebook pixels will help you consistently and easily track conversion and events from your website, allowing you to prove the success (or failure) of your advertising while building valuable data inside of … Click on ‘Preview’. // signup page: Data layer variable names should be enclosed in quotes, The name ‘Data Layer’ itself is case sensitive. “www.abc.com/products/newsunglasses” then the ‘Page Hostname’ variable would return “www.abc.com”, Page Path: Provides the path portion of the current page. This is where the command queue is built, which handles the list of functions (generally, ad calls) to be handled asynchronously. Q. Because this method puts the second code snippet in the footer, rather than after the opening tag, your tag might not fire if a visitor doesn’t completely load your page (which is rare, but possible). A local variable has got a local scope and can only be accessed within the function where it is declared. Maths and Stats for Web Analytics and Conversion Optimization It helps you add and manage all the various scripts you use on your site. Function gtm_body_code(){ You can directly pull data from the presentation layer by traversing the HTML DOM (structure of HTML) using JavaScript and then send the data to the container tag. You can use GPT without modifying your website's
. So as long as you are using data layers, you may need to depend upon IT for its updates and maintenance. The following is a sample of the full code for creating a Google Publisher Tag (GPT) for desktop and mobile implementations. A multi-dimensional array is an array that contains one or more arrays. But you still need a basic knowledge of HTML, DOM, and JavaScript. Use the first method, if you want to push information into a data layer on page load. Container ID: Provides the GTM container’s public ID. Following is an example of an array that has the following three properties/elements: “Amit”, “Sinha” and 35: Since we use numbers to access array elements, we can access the first property of the array ‘a’ by the notation: We can re-write the array ‘a’ as the following object: b = {“FirstName”: “Amit”, “LastName”:”Sinha”, “Age”: 35}; Here ‘b’ is an object that has the following three properties/elements: Since we use property names to access object elements, we can access the first property of the object ‘b’ by the notation: So while both array and objects are special variables that can store multiple elements (of the same or different data types) they store data in a different format and are accessed differently. We use ecommerce data layers when we need to install ecommerce tracking or enhanced ecommerce tracking code on a website via GTM.

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