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.
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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.
como puedo hacer un calculo en un formulario? - can make a calculation on a form?Asked by facturamelo on January 26, 2014 at 12:27 PM
y que se actualice automaticamente el campo "Disponible"
Thank you for contacting us.
Yes you can.
Using the Calculation wizard, you can select the fields that are in the calculation, and decide what to do with them to get an output.
For example, in the Available field, you could select the Calculation wizard and tell it what should be calculated as the result as shown below:
Here's a test form: http://jotform.com/form/40216778024957
You can copy it into your Jotform account and take a look.
Please let us know if this helps.