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JotForm is a free online form builder which helps you create online forms without writing a single line of code. No sign-up required.
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Create an invisible field that appears only after answering another fieldAsked by michelfigueira on May 06, 2015 at 09:03 AM
I wonder if there is such option.
In this my case, I would have a field. He would answer YES then automatically arise other field below.
Yes this is possible, you can use the conditional logic feature of the form builder to set actions with specific rules. Here's the guide that you can refer: http://www.jotform.com/help/57-Smart-Forms-Using-Conditional-Logic.
Do let us know if you need more information on this.