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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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    Validation: Accept certain amount of symbols

    Asked by call4angel on November 16, 2012 at 06:05 PM


    How can I make a form field only accept a certain amount (number) of alphanumeric entry?




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    Answered by jeanettebmz on November 16, 2012 at 06:24 PM

    You can set the limit of characters as well as the type of validation, by selecting the field and then going to the Toolbar and clicking on the Validation button, the size button is also before that one, as shown on this image

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    Answered by call4angel on November 16, 2012 at 06:56 PM

    Thanks for your response.

    I did exactly that - it didn't work.

    I tested the form with only 4 alphanumeric characters and I was able to submit the form.

    I would like submitters to be unable to submit the form if the field is not populated with 7 alphanumeric characters.

    How do I do this?

    Here's the form: http://form.jotform.co/form/23196355640859

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    JotForm Support

    Answered by Mike_T on November 16, 2012 at 07:18 PM

    You can set the Max Size parameter to 7, this will not allow form users to put more than 7 characters into the field.

    Unfortunately, we do not have the minimal size validation. In other words, you can not set the minimal size validation through the form builder. However, it is most probably that such validation can be added with custom script on your web page.