Regular Expressions 101

Explanation
Pro

^start of line

\/the literal / (47₁₀ / 57₈ / 2F₁₆)

Negative Lookahead(?!.*\/\/)

.*any character (except for line terminators), repeated any number of times

\/the literal / (47₁₀ / 57₈ / 2F₁₆)

Group 1([a-zA-Z-\/]+)

Character Class[a-zA-Z-\/]+

+matches at least one character from the set below:

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

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

-the literal - (45₁₀ / 55₈ / 2D₁₆)

\/the literal / (47₁₀ / 57₈ / 2F₁₆)

$end of line

Global pattern flags

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

i modifier: insensitive. Matches without distinguishing uppercase and lowercase letters

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

^\/(?!.*\/\/)([a-zA-Z-\/]+)$

/this/is/an/url/path
/this/is/an/url/path/
/this/is/an/url/path!
/this/is/an/url/path@
/this-is-an//url/path

/this/is/an/url/path
/this/is/an/url/path/
/this/is/an/url/path!
/this/is/an/url/path@
/this-is-an//url/path