Mandatory Fields & Next Button
I have a problem in regard to programming mandatory open question fields. As the study takes place online, it is not possible to use the "form_base".
Probably simple but I cannot figure it out: In some open questions, participants need to enter their age or write down opinions.
1) However, the answers need to be mandatory, so that the participants cannot skip the questions.
2) Only a mouseclick on the "next button" is allowed. What code do I need to use, so that the question is not skipped, when "Enter" is pressed? As in one question participants need to list some words, I am afraid that they will press "Enter" in order to skip to the next line. Unfortunately, then the next question would be already shown and the former one not properly answered.
Thank you a lot for your help!