regex - Regular expression numbers with dots and commas -

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I need a regular expression that behaves numbers with numbers and commas as well. Comma should not be treated as a thousand separator.

Example:
9.8
9 8

9.8 Both

P> I tried it, but it does not work . 

  ^ (\ d + (?: [\. \,] \ D {2}) | $

Your regex ^ (\ d + (?: [\. \,] \ D {2})? $ $ Milan Number if you want to match any number of decimal (1 or more), use it: 

  ^ (?: \ D + (?: [.,] \ D +)? | $ $

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