javascript - Representing Ranges of Time with Different Units in a Comparable Way -

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i have event objects have lifespan attribute. have varying types of events, each different lifespans , potentially different units (e.g. 4-10 hours, 5-8 weeks, 1 month - 2 years). want store these ranges uniform , comparable datatype i'm not sure best option is. ideally want able go through list of events , find can last 3 hours, 1 week, 2 months, etc.

the problem having comparing values same "substance" (i.e., time) yet have different units. great candidate value object. value objects not common pattern in javascript, no less applicable , great place domain logic. this article great @ using value objects javascript.

  • create "class" defining javascript function.

  • in it, store value lifespan in smallest units use (hours).

  • create several internal methods , set value based on unit type (for example, multiplying weeks 168 number of hours). may want round nearest week/month/year when getting in units.

  • create methods compare value in hours value in hours of instance.

this allow compare events independently of storing unit of time lifespan is.


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