JotForm is a free online form builder which helps you create online forms without writing a single line of code. No sign-up required.
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.
You can accompalish this by using "Max Size" option under properties of text box. Review the following screenshot, I just have cloned your form for this particular thread.
I hope this helps. Please let us know if you need further assistance on this, we would be happy to assist you.
I thought that is the number of characters, not the number itself. They can only enter the following numbers:
That can be accomplished using a "Number" field and setting the minimum to 1 and the maximum to 8:
Here is a quick test form to show you how it works:
If you have any further questions, let us know and we will be happy to help.