Validating value to check if its a valid time - can i use dateISO

Validating value to check if its a valid time - can i use dateISO

Hey new to this but already in love with jquerry, its made my job so much easier can't beleive the time I wasted using other methods.

Anyway still new to this so unsure if I can use dataISO to validate time value in terns of hh-mm-ss.
Wc3 states ISODate include time, but just worried it only incuded if there also data in the values.

If I can't use dateISO is there an otherway of doing it?

Many Thanks

Damien