If you want to add additional functionality to a form that is not available via our interface you can add an external JavaScript file. This article will explain where and how you can add an external JavaScript file.
You can add external JavaScript files under ‘Build’ > ‘Form’.
Click on ‘Add file’ and a pop-up will appear where you can add the file name and URL.
The file name can be any name you want. The file URL should be a publicly accessible file location, so our form access the file and execute it.