regex - Can we validate Min and Max Value for a floating Number using RegExp?

Question

Hi I know that we can validate Min and Max Length of a number using Regex. But can we validate Min and Max Value for a floating point number using the same?

• Min Value : 0.00
• Max Value :100,000,000.00

Could anyone please just apply Min and Max Value to following Regex:

^(?=.*d)(?!.*?.[^.
]*,)d*(,d*,?)*(.d*)?$

Above Regex matches a floating number with optional decimal point and commas.

Answer 1

Regex is for strings. You try to compare floats. It's just not the right tool. It's worse than eating your soup with a fork. It's like writing on paper with a knife or cutting your hair with a teaspoon.

Look here for a solution with positive integers without thousands separator : Using regular expressions to compare numbers

I leave the task to you to extend that solution to using floats, thousands separator and negative numbers.