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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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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.

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    Preventing underage users from submittting the form

    Asked by lenhartb on April 08, 2016 at 09:03 PM
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    JotForm Support

    Answered by Chriistian on April 09, 2016 at 01:50 AM

    Hi, to assist you further, please give us more details regarding your concern.

    Are you working on the form http://www.jotform.us/form/50854355500148? Do you want to see in your submissions page whether the user who submitted your form is an underage? What ages should be considered underage by your form?


    We will wait for your reply.

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    Answered by lenhartb on April 09, 2016 at 06:45 AM
    As a person is completing the form, they have to enter age. When they enter their date of birth it warns them they are under age. When they enter the date of birth for the person they are applying against, it also warns them that the person they are applying against is under 18 and tells them to e-mail me.
    Sent from my iPhone
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    Answered by Boris on April 09, 2016 at 08:30 AM

    Yes, this is possible to achieve by using conditional logic on your form, and a text field that will display the message to contact you. You can see a demo of the age calculation in general here:


    We can achieve the same calculation on your form with just one condition. The first step would be to use a Text field to provide your custom message for underage people:

    Second step would be to create a show/hide condition, which will be set up as:

    IF Date of Birth is after value today-6574
    IF Date of Birth (provide if at all possible) is after value today-6574
    IF any of the above rules are met
    SHOW Text field
    HIDE Submit button

    Here is a demo form where you can see this condition in practice. I've removed the Page Break field, so that the entire form is displayed for demonstration purposes:


    Let us know if you need any further assistance in setting it up, and we will be happy to help.