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    Is there a way to validate a text field where it has to be a certain number of digits?

    Asked by dano2334 on August 15, 2014 at 08:23 AM
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    Answered by jedcadorna on August 15, 2014 at 10:49 AM

    That is possible by setting a validation to your text field. You can set it as 'numbers' then apply input mask so you can format the numbers that will be inputted into your text fields.

    You can set your input mask like this:

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    Answered by dano2334 on August 15, 2014 at 11:48 AM

    But I don't want the user to know how many digits needs to be entered.

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    JotForm Support

    Answered by david on August 15, 2014 at 12:48 PM


    Unfortunately this is not possible without using your forms source code and embedding it to a web page.  Here is a discussion on how to accomplish this if you are willing to do so:


    Essentially you would need a script such as this one in your page to run the validation:

    <script type="text/javascript">
      (function () {
      var accountNum = document.getElementById("input_5"),
      valid = /^[0-9]{10}$/;
      accountNum.onblur = function () {
      if (valid.test(accountNum.value) === false) {
      alert("Please enter a ten (10) digit number!");
      accountNum.value = "";

    Then you would substitute "Input_5" with the field ID in your form you wish to validate.

    Please let us know if you have any further questions and we will be happy to help.

    Thank you for using JotForm!