currency regex with decimal allowed with 0

Question

With reference to my previous question currency regex

I want to add an condition, i want to allow decimal only if it starts with 0

example

0.25 should be allowed 1.25 not allowed

current regex is as following

/^(?:\d{1,3}(?:,\d{3})+|\d+)(?:\.\d+)?$/

which matches comma trailing etc.

Possible duplicate of [Regex currency validation](http://stackoverflow.com/questions/16242449/regex-currency-validation) — Heretic Monkey, Dec 13 '16 at 21:10
Maybe `^(?!0*[1-9][,\d]*\.\d)(?:\d{1,3}(?:,\d{3})+|\d+)(?:\.\d+)?$` will do. — Wiktor Stribiżew, Dec 13 '16 at 21:11

Will Barnwell · Accepted Answer · 2016-12-13T21:36:29.113

1

This will match all the currency matches from before without decimals or decimals with 0.x*

/^((?:\d{1,3}(?:,\d{3})+|\d+)|(?:0\.\d+))$/

If you only want to match 0.xx instead of an arbitrary number of decimal places use

/^((?:\d{1,3}(?:,\d{3})+|\d+)|(?:0\.\d{2}))$/

This one changes \d+, one or more digits, to \d{2}, exactly 2 digits.

edited Dec 13 '16 at 21:36

answered Dec 13 '16 at 21:06

Will Barnwell

1

regex always been pain for me. can you explain the the second regex i appreciate in advance – d-man Dec 13 '16 at 21:15

1 Answers1