javascript validation for input time in format hh:mm a

Question

I want to make user enter time in format "hh:mma" or "hh:mm a". I want to leave it to user the choice to enter space between mm & a. What can be the regular expression for this ?

now using /^(\d{1,2}):(\d{2})(:00)?([apAP][mM])?$/; – AdityaKapreShrewsburyBoston Jul 20 '14 at 00:46 — AdityaKapreShrewsburyBoston, Jul 20 '14 at 00:46

score 0 · Answer 1 · edited May 23 '17 at 10:33

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Use ? to make the preceding token optional, for example /colou?r/ matches color and colour. If you are struggling with the hh:mm part of the regex, this may help.

edited May 23 '17 at 10:33

Community

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answered Jul 20 '14 at 00:20

alexdavey

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score 0 · Answer 2 · answered Jul 20 '14 at 00:20

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Try this:

(([0-1]?[0-9])|2[0-3]):[0-5][0-9] ?(am|pm|AM|PM)

answered Jul 20 '14 at 00:20

Koen Peters

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score 0 · Answer 3 · answered Jul 20 '14 at 00:20

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Something like the following should work

([01]?[0-9]|2[0-3]):([0-5]?[0-9])\s?(am|pm)

answered Jul 20 '14 at 00:20

Jonathon

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score 0 · Accepted Answer · answered Aug 07 '14 at 18:06

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I just put space in the pattern where I required space and if worked perfectly

answered Aug 07 '14 at 18:06

AdityaKapreShrewsburyBoston

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javascript validation for input time in format hh:mm a

4 Answers4