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.
I need to pass a variable from one page to another?Asked by evbf on May 06, 2016 at 04:08 PM
If you need to pass value to your form, the best option is to do it true URL query.
You could use the method from this guide - Prepopulating-fields-to-your-JotForm-via-URL-parameters, and use your script to generate the query string for the iframe URL.