Regular Expressions 101

Group 1([/ ])

Character Class[/ ]

/the literal / (47₁₀ / 57₈ / 2F₁₆)

the literal (32₁₀ / 40₈ / 20₁₆)

Group 2(\d\d)

\da Unicode decimal digit

\ba Unicode word boundary

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

([/ ])(\d\d)\b

New

4/3/09

\g<1>19\2