Javascript regular expression for comma delimited decimal

Question

I need a regular expression that matches currency values similar to here: Regex for Money

i.e. '1000', '1000,0' and '1000,00'

but I need it to work using javascript:

 var RE = /^-{0,1}\d*\.{0,1}\d+$/; //validates decimal format such as 1000.50
    if (locale == "fr") {
        RE = \d+(?:,\d{1,2})? //this line fails when validated using the javascript below
    }
    return (RE.test(valueToValidate));

possible duplicate of [Regex for Money](http://stackoverflow.com/questions/1028221/regex-for-money) The regex posted there will be no different for javascript... — Esailija, Jan 18 '12 at 15:44
It is unclear to me what you want the regex to match and not match. — jfriend00, Jan 18 '12 at 15:46

score 3 · Accepted Answer · answered Jan 18 '12 at 15:45

3

Literal regex in javascript should be defined with / around the pattern

var RE = /^-{0,1}\d*\.{0,1}\d+$/; //validates decimal format such as 1000.50
if (locale == "fr") {
    RE = /\d+(?:,\d{1,2})?/ //this line fails when validated using the javascript below
}
return (RE.test(valueToValidate));

answered Jan 18 '12 at 15:45

Sam Greenhalgh

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thanks for the heads up about the / defining the pattern when using javascript – FiveTools Jan 18 '12 at 15:57
you can also optionally append `i` and `g` after the trailing `/` to make the pattern insensitive or global respectively – Sam Greenhalgh Jan 18 '12 at 16:11

score 0 · Answer 2 · answered Jan 18 '12 at 15:46

0

Just a syntax check: did you forget the forward slashes in your second assignment?

answered Jan 18 '12 at 15:46

Unai Vivi

3,073
3
30
46

Javascript regular expression for comma delimited decimal

2 Answers2