Regular Expressions 101

Pro

^start of line

Non-Capturing Group(?:[1-9]|1[0-3]|[Qq])

1st Alternative[1-9]

Character Class[1-9]

1-9one character from 1 (49₁₀) to 9 (57₁₀)

2nd Alternative1[0-3]

1the literal 1 (49₁₀ / 61₈ / 31₁₆)

Character Class[0-3]

0-3one character from 0 (48₁₀) to 3 (51₁₀)

3rd Alternative[Qq]

Character Class[Qq]

Qthe literal Q (81₁₀ / 121₈ / 51₁₆) (case sensitive)

qthe literal q (113₁₀ / 161₈ / 71₁₆) (case sensitive)

$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

^(?:[1-9]|1[0-3]|[Qq])$