Javascript function need allow numbers, dot and comma

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Firstly your regex currently doesn’t allow comma, which is your requirement.

Secondly, you haven’t used any quantifier, so your regex will match only a single character – one of [0-9] or a dot. You need to use a quantifier.

Thirdly, instead of using pipe, you can move all characters inside the character class only.

Try using the below regex:

/^[0-9.,]+$/

Quantifier + is used to match 1 or more occurrence of the pattern.
^ and $ anchors match the beginning, and end of the string respectively.

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