How to Use Custom JavaScript Variable in GTM (Extract Any Value Without Code)

Publicado el: 27 mayo 2026
en el canal de: Analytics With Fazal

In this video I will show you exactly how to create and
use a Custom JavaScript Variable in Google Tag Manager
to extract any value from your website without touching
a single line of code.

What you will learn:
✅ What Custom JavaScript Variable is in GTM
✅ How to create your first Custom JS Variable
✅ How to extract H1 text, price, product name from any page
✅ How to find correct CSS selectors using Inspect
✅ How to test your variable in GTM Preview Mode
✅ How to use the variable inside GA4 Event Tags
✅ 3 real examples you can copy and use today

This is the most powerful skill in Google Tag Manager.
Once you learn this you can track almost anything
without asking a developer.

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👉 Need help with your GTM setup?
DM me on LinkedIn: linkedin.com/in/fazalurrehman0

Timestamps:
0:00 What is Custom JavaScript Variable
1:30 Create your first variable
3:00 Real examples — price, title, user email
5:30 Test in GTM Preview Mode
7:00 Use it inside GA4 tag

#GoogleTagManager #GTM #CustomJavaScript #GA4
#WebTracking #DigitalMarketing #NoCode #WebAnalytics
#GTMTutorial #GoogleAnalytics

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