Validation results

I’d like to learn how to get the validation result of multiple inputs and save this value.
Background
I’ve built a multipart form with 3 sections, each section will have all validations in the visible section run on a button dedicated to only that section. This is working as described. If validations in one section are good, then the user will see the next section. At the end of the last section, and after that final section’s validations run, the results of all 3 section validation results will be evaluated to determine if the form data are submitted.
The individual sections will be hidden/shown based on that section’s validation results.

Does anyone know how to examine/save the validation results prior to submitting the form data?
Thank you
P.S.: Yes, I’ve seen the multipart form tutorial and am basing my work on it. It doesn’t address this scenario though.