How to convert php code to javascript?

Question

PHP

Good afternoon, there is a GetResponse service script written in PHP how to do the same, only in javascript.
Script:

<?php echo "<script type='text/javascript'>gaSetUserId('".$userEmail."');</script>"; ?>

The script will be used on the PlatformaLP service.

Answer 1

More or less like this))
Only the userEmail variable must be passed to the template