Regular Expressions 101

^start of line

Character Class[A-Za-z]

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

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

.{2}any character (except for line terminators), repeated exactly 2 times

-the literal - (45₁₀ / 55₈ / 2D₁₆)

Character Class[A-Za-z]

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

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

.{2}any character (except for line terminators), repeated exactly 2 times

-the literal - (45₁₀ / 55₈ / 2D₁₆)

Group 1([0-9]|[0-9].{1}-[0-9].{2})

1st Alternative[0-9]

Character Class[0-9]

0-9one character from 0 (48₁₀) to 9 (57₁₀)

2nd Alternative[0-9].{1}-[0-9].{2}

Character Class[0-9]

0-9one character from 0 (48₁₀) to 9 (57₁₀)

.{1}any character (except for line terminators), repeated exactly 1 time

-the literal - (45₁₀ / 55₈ / 2D₁₆)

Character Class[0-9]

0-9one character from 0 (48₁₀) to 9 (57₁₀)

.{2}any character (except for line terminators), repeated exactly 2 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.

Search reference

Regular Expression

^[A-Za-z].{2}-[A-Za-z].{2}-([0-9]|[0-9].{1}-[0-9].{2})$

New

ABC-DEF-17-021
AB-DEF-17-021
ABC-DEF-1
ABC-DEF