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.

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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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    How to have input validation on Phone fields

    Asked by Geodesyxyz on November 16, 2014 at 05:37 AM
    Would you suggest me a way to perform a check in the phone field for ensuring that the user will input only digits, not letters?
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    JotForm Support

    Answered by jonathan on November 16, 2014 at 06:29 AM


    You can use the Phone Number field from Quick Tools.

    Make sure to set to ON the 'Input Mask' property to prevent input characters that are not numbers.


    Inform us if you need further  assistance.


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    Answered by Geodesyxyz on November 17, 2014 at 01:15 PM

    Solved, thank you!

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    Answered by Shadae on November 17, 2014 at 01:40 PM

    Hi Geodesyxyz,

    On behalf of my colleague you are most welcome. We are happy that your issue has been solved.

    Please feel free to contact us if you need further assistance.

    Thank you.