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.

  • Profile Image

    How can I create a number field with the function to decrease the number quantity after a submission is made?

    Asked by lore95 on November 11, 2013 at 09:12 AM



    I would like to create a number field that depends from another field....

    Like; the number is 30, but everytime that somebody subscribes, the number goes down, until it will be 0.

    How can I do this.



  • Profile Image

    Answered by EliezerN on November 11, 2013 at 12:10 PM

    Thanks for contacting us.

    Let me inform you that such function that can allow you to decrease the number of a certain field is not part of our form builder feautures, however, you could be able to add such function by using your form source code and applying some Javascript, so, it would be a change out of jotform. You can learn how to get your form source code following this guide: How to get your form source code

    Please let us know if you need further assistance with this or kindly open a new thread to make unrelated questions.