Is there any function that I can use to print my answers on the form after I have submitted the form from Preview Before Submit widget?

How do I have a print form function inside the Preview Before Submit widget?

or How do I have print form function on the Thank You Page after I have submitted the form?

Hello AAA_2015,

You can add a print button in your form. Unfortunately print button can't be added inside Preview Before Submit widget nor it can be added in the thank you page since javascript code needs to be added to print.

If you want to allow users to print submission data after the form is submitted, here are the options available:

#1. You should display all the submitted form field's data in your thank you message so that users can manually print them. The following guide should help you on how to post submission data to thank you message: http://www.jotform.com/help/201-How-to-Post-Answers-to-Thank-you-Page 

#2. You can simply add your submission's edit link in your form's notification email alert. Once the form is submitted, you will receive submission email with a click able link. You can click on the link which will redirect you to the same form with submission input data and you can print it bu clicking on the print button. The following guide should help you:  https://www.jotform.com/help/335-How-to-Print-the-Form-with-the-Users-Data 

Hope this helps.

Do get back to us if you have any questions.

Thank you!