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    Is there a way to allow only even numbers?

    Asked by pictureperfectalbums on January 23, 2015 at 10:33 AM



    I need the user to only input even numbers. The options are too long to list in a dropdown list. 
    Can I check user input to only allow even numbers?


    Thank you.

    Page URL:

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    Answered by Carina on January 23, 2015 at 11:57 AM

    Do you mean 11 digits instead?

    You can use the input mask:

    Or the max size property:

    You can test the form and mouse over the fields for more information:


    Let us know if we can assist you further.  

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    Answered by pictureperfectalbums on January 26, 2015 at 01:02 PM


    That's great to know but I meant even numbers as in 2, 4, 6, 8, etc... 


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    JotForm Support

    Answered by Mike on January 26, 2015 at 02:53 PM

    I do not think that we have such fields with limited inputs, but it is possible to check if the value is even/odd using conditional logic on form.


    Here we forward the value to the Even field if it ends with 0, 2, 4, 6 or 8.


    Is this something that can be used on your form?

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    Answered by pictureperfectalbums on January 26, 2015 at 03:10 PM

    Yep, that's perfect. 
    Thank you!