Regex to allow negative values

Question

I am hoping to find someone here which can give me a hand with some regex I need to modify.

This regex is being used in JavaScript for some validation:

/^([A-Z]{3} [0-9]+\.[0-9]{1,2}(, )?)+$/

This will correctly validate the following values:

EUR 20.3, USD 9.0

GBP 8.8

I would like to modify the regex to also accept negative values such as:

EUR -20.3, USD -9.0

I thank you for your help :)

Regards Gabriel

meouw · Accepted Answer · 2011-04-07 11:12:39Z

5

surely just add in:

-?

which should optionally match '-'

/^([A-Z]{3} -?[0-9]+\.[0-9]{1,2}(, )?)+$/

edited Apr 7, 2011 at 11:12

meouw

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answered Apr 7, 2011 at 9:49

Gareth Davis

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Comments

Yoann · Accepted Answer · 2011-04-07 09:51:03Z

1

In the exact same way you check for the coma , but xith negative signe -

Try something like this ([A-Z]{3} -?[0-9]+.[0-9]{1,2},?)+

answered Apr 7, 2011 at 9:51

Yoann

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Comments

herostwist · Accepted Answer · 2011-04-07 09:52:41Z

0

try this:

/^([A-Z]{3} -?[0-9]+(\.[0-9]{1,2})?,?)+$/

the decimal places are now optional

GBP -1, GBP -1.1 should be valid

answered Apr 7, 2011 at 9:52

herostwist

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