Regular Expressions 101

^start of line

\/the literal / (47₁₀ / 57₈ / 2F₁₆)

Non-Capturing Group(?:(?:[\w\d-]\/?)*[A-Za-z0-9])

Non-Capturing Group(?:[\w\d-]\/?)*

*repeats the group contents below any number of times:

Character Class[\w\d-]

\wany word character

\da digit

-the literal - (45₁₀ / 55₈ / 2D₁₆)

\/?optionally matches the literal / (47₁₀ / 57₈ / 2F₁₆)

Character Class[A-Za-z0-9]

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

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

0-9one character from 0 (48₁₀) to 9 (57₁₀)

$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.

Search reference

Regular Expression

^\/(?:(?:[\w\d-]\/?)*[A-Za-z0-9])$

New

/path
/valid/path
/this/regex/uses/A-Za-z0-9-_/and/should/end/with/A-Za-z0-9

invalid/path
another/invalid/path/
/this/is/also/invalid/
/whoops//ies
//not/even/a/valid/path

Regular Expression

Substitution