Regular Expressions 101

1st Alternative(?=.*\/{2}.*)[\w?#.,]+

Positive Lookahead(?=.*\/{2}.*)

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

\/{2}the literal / (47₁₀ / 57₈ / 2F₁₆) , repeated exactly 2 times

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

Character Class[\w?#.,]+

+matches at least one character from the set below:

\wany word character

?the literal ? (63₁₀ / 77₈ / 3F₁₆)

#the literal # (35₁₀ / 43₈ / 23₁₆)

.the literal . (46₁₀ / 56₈ / 2E₁₆)

,the literal , (44₁₀ / 54₈ / 2C₁₆)

2nd Alternative^(?:(?!\/{2}))[\w?#.,]+

^start of line

Non-Capturing Group(?:(?!\/{2}))

Negative Lookahead(?!\/{2})

\/{2}the literal / (47₁₀ / 57₈ / 2F₁₆) , repeated exactly 2 times

Character Class[\w?#.,]+

+matches at least one character from the set below:

\wany word character

?the literal ? (63₁₀ / 77₈ / 3F₁₆)

#the literal # (35₁₀ / 43₈ / 23₁₆)

.the literal . (46₁₀ / 56₈ / 2E₁₆)

,the literal , (44₁₀ / 54₈ / 2C₁₆)

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

(?=.*\/{2}.*)[\w?#.,]+|^(?:(?!\/{2}))[\w?#.,]+

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