Regular Expressions 101

Non-Capturing Group(?:\(\d\d?\)[\s-.])?

?repeats the group contents below at most once:

\(the literal ( (40₁₀ / 50₈ / 28₁₆)

\da digit

\d?optionally matches a digit

\)the literal ) (41₁₀ / 51₈ / 29₁₆)

Character Class[\s-.]

\sany whitespace character

-the literal - (45₁₀ / 55₈ / 2D₁₆)

.the literal . (46₁₀ / 56₈ / 2E₁₆)

\d{4}a digit, repeated exactly 4 times

Character Class[\s-.]

\sany whitespace character

-the literal - (45₁₀ / 55₈ / 2D₁₆)

.the literal . (46₁₀ / 56₈ / 2E₁₆)

\d{4}a digit, repeated exactly 4 times

Global pattern flags

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

No unit tests · Add a test to get started

25 tokens

Regular Expression

(?:\(\d\d?\)[\s-.])?\d{4}[\s-.]\d{4}

There are no unit tests, click to add some.