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.
How to prevent users from making multiple submissions on a formAsked by gfregister on September 09, 2015 at 11:37 AM
people can easily make junk entries by reloading the form.. i had to change form again and again because of this junk thing... there should be quota for an ip address to make on 10 or less entries per day... otherwise shit can get fucked up
Go to Preferences then on the tabs go to Form Limits, you have multiple options to limit the amount of submissions.
As @kingkest mentioned you can set Unique Submissions on a form to prevent users from making multiple submissions on a form. Inside of this guide you can find out how to do it: https://www.jotform.com/help/64-How-to-Set-Unique-Submissions-on-a-Form
You can also set Form Limits Based on a Unique Question: https://www.jotform.com/help/223-How-to-set-Form-Limits-Based-on-a-Unique-Question
Hope this will help. Let us know if you need further assistance.