Question

I need a regex expression that allows decimals but no commas. Such as:
1200.00
or
50.00
or
40
or
1
The expression is used in a validation to make sure people put in a price as a number, but no commas. I currently have a regex that allows for commas, numbers, and decimals, but I cannot seem to get the commas out.

This is the current regex that I have which doesnt allow commas or decimals, but I want decimals in there

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

Thanks for your help.

Answer 1

Something like this should work: ^\d+(\.\d{2})?$

This basically states the following:

• ^\d+: Start from the beginning of the string (^) and match one or more digits (\d+).
• (\.\d{2})?: Match a period character (\.) followed by exactly 2 digits (\d{2}). The question mark denotes that the value within the brackets can either exist or not, meaning that it will match either 1 or 0 instances of the pattern.
• $: The string must end here.