Correct, I meant that client-side validation driven by JS became popular because of UX issues when using pure HTML. There have always been plenty of other reaso

Correct, I meant that client-side validation driven by JS became popular because of UX issues when using pure HTML. There have always been plenty of other reasons to use JS with forms besides validation. But it’s notable because forms and form validation are such common building blocks that if people feel the need to use JS there, it kind of infects everything else around it. IMO, being able to build high quality form experiences without JS is critical to reducing bloat on the web.