It is possible to run a customized Javascript on the survey page as per your requirement. For example, to execute a specific action like auto redirection to your Website after the user completes the survey. 


To do this, follow the below steps:


1) Click on the edit survey option from delivery manager.

2) Edit the last page of the survey.

3) Click on "Add a widget" drop down and select the Javascript widget.


4) Add below code as shown in the Javascript widget and save the survey.


The code below will redirect the user to "https://customergauge.com" 5 seconds after the user completes the survey.


<script>
setTimeout(function() {
 window.location.href = "https://customergauge.com";
}, 5000);
</script>




For more information about editing a survey, visit this page