The toLocaleTimeString()
method of Date
instances returns a string with a language-sensitive representation of the time portion of this date in the local timezone. In implementations with Intl.DateTimeFormat
API support, this method simply calls Intl.DateTimeFormat
.
Every time toLocaleTimeString
is called, it has to perform a search in a big database of localization strings, which is potentially inefficient. When the method is called many times with the same arguments, it is better to create a Intl.DateTimeFormat
object and use its format()
method, because a DateTimeFormat
object remembers the arguments passed to it and may decide to cache a slice of the database, so future format
calls can search for localization strings within a more constrained context.