Regular Expressions 101

Pro

1st Alternative^([a-zA-Z]{2}-\d{8})$

^start of line

Group 1([a-zA-Z]{2}-\d{8})

Character Class[a-zA-Z]{2}

{2}matches exactly 2 characters from the set below:

a-zone character from a (97₁₀) to z (122₁₀) (case sensitive)

A-Zone character from A (65₁₀) to Z (90₁₀) (case sensitive)

-the literal - (45₁₀ / 55₈ / 2D₁₆)

\d{8}a digit, repeated exactly 8 times

$end of line

2nd Alternative^(\d{8})$

^start of line

Group 2(\d{8})

\d{8}a digit, repeated exactly 8 times

$end of line

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.

25 tokens

^([a-zA-Z]{2}-\d{8})$|^(\d{8})$

New

af-12345678
12345678
af12345678

af-12345678
12345678
af12345678