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.
Technically hidden field widget is just used to hide fields and no other feature. If you want something that you have control then you can use a regular Textbox field instead of Hidden field widget.
Using textbox field will still allow you to hide and show the fields in your Jotform.
Hidden field doesn't have properties that will un hide it unlike text box.