This. In my form generation library (that I maintain and use for client apps) there are two types of datetime input areas available. They take the same arguments for ranges and single/double dates, with or without time, and at what frequency of time (e.g. hourly, 15 minutes, etc). One wraps a calendar library (daterangepicker) and attaches it to the form; the other generates a responsive text input with placeholders and danger labels. Their outputs are both returned as Moments which can be sanity checked, tested against other constraints and shipped back out as YYYY-MM-DD HH:MM:SS to the database.
