javascript help (UNCLASSIFIED)

From: Zhu, Kaile NAF USARMY IMCOM HQ (US) <kaile.zhu.naf_at_nyob>
Date: Thu, 18 Jan 2018 16:47:12 +0000
To: CODE4LIB_at_LISTS.CLIR.ORG 
CLASSIFICATION: UNCLASSIFIED

Anybody can help me with such JavaScript code that can chop the ending portion of the string - last 5 characters - verifying if it is all numbers (zip code)?

Thanks.

Kelly Zhu

CLASSIFICATION: UNCLASSIFIED
Received on Thu Jan 18 2018 - 11:47:18 EST

URL: http://serials.infomotions.com/code4lib/