Are Drupal webforms built using HTML?

Question

I want to know what kind of code is behind Drupal webforms. Is it all HTML with the input tag?

Other than Drupal, what is mostly used to build webforms?

Answer 1

This should get you started https://www.drupal.org/docs/8/modules/webform https://www.drupal.org/docs/8/modules/webform/webform-features

The webforms are rendered as HTML, but are stored as Drupal entities in MySQL. The submissions from the HTML are also stored in MySQL based on the schema. I can't see any public documentation around what the specific schema is for webforms, but if you want to know the place to ask would be here https://www.drupal.org/project/issues/webform?text=&status=All&priorities=All&categories=4&version=any_8.x-&component=All