Regular Expressions 101

Pro

\(the literal ( (40₁₀ / 50₈ / 28₁₆)

Negative Lookahead(?![^()]*\bBAD\b[^()]*\))

Negated Character Class[^()]*

*matches any number of characters outside the set below:

(the literal ( (40₁₀ / 50₈ / 28₁₆)

)the literal ) (41₁₀ / 51₈ / 29₁₆)

\ban ASCII word boundary

BADthe literal text BAD (case sensitive)

\ban ASCII word boundary

Negated Character Class[^()]*

*matches any number of characters outside the set below:

(the literal ( (40₁₀ / 50₈ / 28₁₆)

)the literal ) (41₁₀ / 51₈ / 29₁₆)

\)the literal ) (41₁₀ / 51₈ / 29₁₆)

Negated Character Class[^()]*

*matches any number of characters outside the set below:

(the literal ( (40₁₀ / 50₈ / 28₁₆)

)the literal ) (41₁₀ / 51₈ / 29₁₆)

\)the literal ) (41₁₀ / 51₈ / 29₁₆)

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

\((?![^()]*\bBAD\b[^()]*\))[^()]*\)

New

(Today is a blue day) (Today is a good day) (Today is a BAD day) (Today is a green day) (Today is a blue day)

(Today is a blue day) (Today is a good day) (Today is a BAD day) (Today is a green day) (Today is a blue day)