This is still the way - jQuery or not - for UI where you can't/don't want to use a component library. I use the same approach for my browser extensions, both for page scripts and options pages. Writing features so you update state then re-render also means you get things like automatically applying option changes live in page scripts, rather than having to reload the page, for free. Just receive the updated options and re-run everything.
Browser extension options pages are mostly a form mapped to what you have stored in the Storage API, so implementing them by handling the change event on a wrapping all the options (no manual event listener boilerplate) then calling a render() function which applies classes to relevant elements ( classes are so good for conditionally showing/hiding things without manually touching the DOM), updates all form fields via named form.elements and re-generates any unique UI elements makes it so un-painful to change things without worrying you're missing a manual DOM update somewhere.
My options pages are Zen Garden-ing 5 different browser-specific UI themes from the same markup to match their host browsers, which is a brittle nightmare to maintain in an app which needs to change over time rather than static demo HTML, but once you've tamed the CSS, the state handling and re-rendering is so painless I'm sticking with it for a while yet, even though it would be long-term easier if I used Preact+htm for no-build option components which know what the active theme is and can generate specific UI for it.
My favourite dirty old-school knowledge is still the named global created for an element with an id, why bother selecting an element when it's right there (once you know you need to avoid global name collisions)?. I use those suckers all the time for quick fun stuff and one-off tool pages.
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