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.
At JotForm, we want to make sure that you’re getting the online form builder help that you need. Our friendly customer support team is available 24/7.
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.
Maybe the Auto Complete widget is a solution:
With this widget you add the items and then user can only insert one letter and the widget will display all the entries with that letter.
Is this a solution for you? If not please let us know more details so we can try to find a solution.