hide a form field

If you want to hide a Form field based on user's answer, then you can do it by using the Conditional logic of Jotform

Please check the detailed example on below URL:

https://www.jotform.com/help/316-How-to-Show-or-Hide-Fields-Base-on-User-s-Answer

You can also check our hidden box widget here: https://widgets.jotform.com/widget/hidden

If you want something else, or need further assistance, feel free to revert back.