Regular Expressions 101

Explanation
Pro

Group 1([\.\/]?.+\/)?

?repeats the group contents below at most once:

Character Class[\.\/]?

?matches at most one character from the set below:

\.the literal . (46₁₀ / 56₈ / 2E₁₆)

\/the literal / (47₁₀ / 57₈ / 2F₁₆)

.+any character (except for line terminators), repeated at least once

\/the literal / (47₁₀ / 57₈ / 2F₁₆)

Group 2(.+[\.js]?)

.+any character (except for line terminators), repeated at least once

Character Class[\.js]?

?matches at most one character from the set below:

\.the literal . (46₁₀ / 56₈ / 2E₁₆)

jthe literal j (106₁₀ / 152₈ / 6A₁₆) (case sensitive)

sthe literal s (115₁₀ / 163₈ / 73₁₆) (case sensitive)

Global pattern flags

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

Match Information

Detailed match information will be displayed here automatically.

Quick Reference

25 tokens

Regular Expression

([\.\/]?.+\/)?(.+[\.js]?)

New

./piechart.js

./piechart.js

piechart.js

./piechart

modules/piechart/piechart.js

./modules/piechart/piechart.js

./modules/piechart/piechart

/modules/piechart/june/june.js

Extraction

./piechart.js

./piechart.js

piechart.js

./piechart

modules/piechart/piechart.js

./modules/piechart/piechart.js

./modules/piechart/piechart

/modules/piechart/june/june.js