What is JotForm?
JotForm is a free online form builder which helps you create online forms without writing a single line of code. No sign-up required.
At JotForm, we want to make sure that you’re getting the online form builder help that you need. Our friendly customer support team is available 24/7.
We believe that if one user has a question, there could be more users who may have the same question. This is why many of our support forum threads are public and available to be searched and viewed. If you’d like help immediately, feel free to search for a similar question, or submit your question or concern.
Unfortunately, adding script on "Thank You" page is not possible. However, you can embed the Facebook "Like" button on one of your webpages, then you can use "Change "Thank You" Page" condition and redirect users to that page.
Below, you will find the guide about how to redirect users to a different pages:
Also, you can get the "Like" button script from the URL below:
For further assistance, please do let us know.