Regular Expressions 101

Negative Lookahead(?!Mrs?\.|Jr\.|Dr\.|Sr\.|Prof\.)

1st AlternativeMrs?\.

Mrthe literal text Mr (case sensitive)

s?optionally matches the literal s (115₁₀ / 163₈ / 73₁₆) (case sensitive)

\.the literal . (46₁₀ / 56₈ / 2E₁₆)

2nd AlternativeJr\.

Jrthe literal text Jr (case sensitive)

\.the literal . (46₁₀ / 56₈ / 2E₁₆)

3rd AlternativeDr\.

Drthe literal text Dr (case sensitive)

\.the literal . (46₁₀ / 56₈ / 2E₁₆)

4th AlternativeSr\.

Srthe literal text Sr (case sensitive)

\.the literal . (46₁₀ / 56₈ / 2E₁₆)

5th AlternativeProf\.

Profthe literal text Prof (case sensitive)

\.the literal . (46₁₀ / 56₈ / 2E₁₆)

Group 1(\b\S+[.?!]["']?)

\ban ASCII word boundary

\S+any non-whitespace character, repeated at least once

Character Class[.?!]

.the literal . (46₁₀ / 56₈ / 2E₁₆)

?the literal ? (63₁₀ / 77₈ / 3F₁₆)

!the literal ! (33₁₀ / 41₈ / 21₁₆)

Character Class["']?

?matches at most one character from the set below:

"the literal " (34₁₀ / 42₈ / 22₁₆)

'the literal ' (39₁₀ / 47₈ / 27₁₆)

\sany whitespace character

Global pattern flags

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

Detailed match information will be displayed here automatically.

Search reference

Regular Expression

(?!Mrs?\.|Jr\.|Dr\.|Sr\.|Prof\.)(\b\S+[.?!]["']?)\s

New

I works just fine for my purpose, but now I need the exact same regex in Javascript? (to make sure that the outputs are consistent) and I'm struggling to translate Mr. this Python regex. Into one compatible with Javascript. "What with Quoting?" Another sentence.

Substitution

$1\n