Beware: some of these are effectively hacks possibly messing up the browser history or introducing accessibility issues for screen readers, keyboard users, or otherwise.
Level 0 developer: don't know how to do this in JS
Level 1 developer: knows how to do things in JS, even when sometimes it should not
Level 2 developer: knows how to do things without JS
Level 3 developer: knows when to use JS and when to use CSS or something else to achieve the goal
I was more the opposite. I avoid learning JS for as long as possible since it seemed so complicated following the resources I tried to learn.
Ideally we’d have just a few more semantic elements that are obvious common patterns introduced to the HTML spec (like details & dialog were). We’re pretty close now, but I would like to see better accessible no-JS options for building menus.
Level 0 developer: don't know how to do this in JS Level 1 developer: knows how to do things in JS, even when sometimes it should not Level 2 developer: knows how to do things without JS Level 3 developer: knows when to use JS and when to use CSS or something else to achieve the goal