Javascript正则表达式表单验证-边缘案例

Question

The following regular expression accounts for almost all the cases I need to match. Examples below.

/\bP(ost|ostal)?([ \.]*O(ffice)?)?([ \.]*Box)?\b/ig

For clarification -the string is lifted in full from an address field and being validated by jQuery Validator. My workplace is unable to ship to a PO Box -hence the requirement.

Matched correctly

po box
p.o. box
post office box
PO. BOX
Post Box
Postal Box

Not matched correctly

19 boxton drive
3 box hill road
22 pop box street
121 pony box
15 posting street

These are valid addresses which incorrectly match

92 postal drive
17 post street

This is an invalid address which does not match

box 199

Answer 1

Give this one a shot:

/\bP(?:\.|o|ost(?:al)?)? ?(?:O(?:\.|ffice)?)? ?Box\b/ig

See: https://regex101.com/r/Eh6kMQ/1/ for an explanation and demo