Regular Expressions 101

Explanation

Pro

1st Alternative(^\d+[-\/]\d+[-\/]\d\d\d\d)

Group 1(^\d+[-\/]\d+[-\/]\d\d\d\d)

^start of line

\d+a digit, repeated at least once

Character Class[-\/]

-the literal - (45₁₀ / 55₈ / 2D₁₆)

\/the literal / (47₁₀ / 57₈ / 2F₁₆)

\d+a digit, repeated at least once

Character Class[-\/]

-the literal - (45₁₀ / 55₈ / 2D₁₆)

\/the literal / (47₁₀ / 57₈ / 2F₁₆)

\da digit

2nd Alternative(\d+[-\/]\d+[-\/]\d\d\d\d$)

Group 2(\d+[-\/]\d+[-\/]\d\d\d\d$)

\d+a digit, repeated at least once

Character Class[-\/]

-the literal - (45₁₀ / 55₈ / 2D₁₆)

\/the literal / (47₁₀ / 57₈ / 2F₁₆)

\d+a digit, repeated at least once

Character Class[-\/]

-the literal - (45₁₀ / 55₈ / 2D₁₆)

\/the literal / (47₁₀ / 57₈ / 2F₁₆)

\da digit

$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

(^\d+[-\/]\d+[-\/]\d\d\d\d)|(\d+[-\/]\d+[-\/]\d\d\d\d$)

1-1-2020 car sale http://www.cars.com
1/2/2020 car sale http://cars.com
car sale http://cars.com 3/1/2020