I'm surprised the article doesn't talk about the <datalist> element. It makes the using the native time input much more user friendly as you can populate it with common times (e.g. Every 30 minutes: 09:00, 09:30, etc... instead of allowing every minute to be selected by default)
It's not quite fully supported in browsers but it's a nice enhancement to those where it works.
https://developer.mozilla.org/en-US/docs/Web/HTML/Reference/...
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