Regular Expressions 101

Group 1(\d{2}[\/ ](\d{2}|January|Jan)[\/ ]\d{2,4})

\d{2}a digit, repeated exactly 2 times

Character Class[\/ ]

\/the literal / (47₁₀ / 57₈ / 2F₁₆)

the literal (32₁₀ / 40₈ / 20₁₆)

Group 2(\d{2}|January|Jan)

1st Alternative\d{2}

\d{2}a digit, repeated exactly 2 times

2nd AlternativeJanuary

Januarythe literal text January (case sensitive)

3rd AlternativeJan

Janthe literal text Jan (case sensitive)

Character Class[\/ ]

\/the literal / (47₁₀ / 57₈ / 2F₁₆)

the literal (32₁₀ / 40₈ / 20₁₆)

\d{2,4}a digit, repeated between 2 and 4 times

Global pattern flags

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

Detailed match information will be displayed here automatically.

Search reference

Regular Expression

(\d{2}[\/ ](\d{2}|January|Jan)[\/ ]\d{2,4})

New

12/12/2017
12/18/2017
12 January 2017
12 Jan 17
I want to apply for leaves from 12/12/2017 to 12/18/2017 I want to apply for leaves from 12 January 2017 to 12/18/2017 I want to apply for leaves from 12/12/2017 to 12 Jan 17