In modern web development, cross-window communication is a powerful technique used to exchange data between different windows or iframes within a web page. This technique becomes especially useful when embedding external content, such as forms, into your website using iframes. One common scenario involves capturing a post message from an embedded iframe and then pushing that information to Google Analytics for tracking purposes. In this blog post, we'll walk you through the process of achieving this using a step-by-step approach.
Post messages are a part of the Web Messaging API that allows secure communication between different browsing contexts (windows or iframes) from the same origin or across different origins. This technique is often used to pass data or instructions between different parts of a web page.
In your embedded iframe, such as a JotForm, you can send a post message when a specific action occurs. For instance, after a user successfully submits a form, send a post message like this:
In the parent window where the iframe is embedded, set up an event listener to capture the post message:
We use a Custom HTML Block to get the data, once we have it we can create a custom event and create a trigger using that event to push the data anywhere, pixels, GA4, Facebook etc.
The crucial step is pushing the captured event to Google Analytics. In the example above, we use the ga function (Google Analytics's tracking code) to send a custom event named 'Form' with the category 'Submission' and a label 'JotForm in Iframe'. You can customize these parameters based on your tracking needs.
The ability to capture post messages and push them to Google Analytics offers a valuable way to track user interactions within embedded iframes. By combining the power of post messages and Google Analytics, you can gain a deeper understanding of how users engage with external content on your website. This approach ensures you're equipped with accurate data to make informed decisions and optimize user experiences.
Reach out to us today. We are always working to improve our services so you can stay on top of your digital marketing goals. Simply fill out our online form to get jump-start your digital marketing today!