Regular Expressions 101

Explanation

Pro

Non-Capturing Group(?:USD|usd)

1st AlternativeUSD

USDthe literal text USD (case sensitive)

2nd Alternativeusd

usdthe literal text usd (case sensitive)

\s+any whitespace character, repeated at least once

.*?any character (except for line terminators), repeated any number of times

Group 1(\d+(?:\.\d{1,2})?)

\d+a digit, repeated at least once

Non-Capturing Group(?:\.\d{1,2})?

?repeats the group contents below at most once:

\.the literal . (46₁₀ / 56₈ / 2E₁₆)

\d{1,2}a digit, repeated between 1 and 2 times

Global pattern flags

g modifier: global. Finds all matches instead of stopping after the first

m modifier: multiline. Causes ^ and $ to match the start and end of each line, not only the start and end of the string

Detailed match information will be displayed here automatically.

26 tokens

(?:USD|usd)\s+.*?(\d+(?:\.\d{1,2})?)

New

I have usd **12** only.
I have usd 12.00 only.
I have usd **** 12.0 **** only.

I have usd **12** only.
I have usd 12.00 only.
I have usd **** 12.0 **** only.