Regular Expressions 101

\s*any whitespace character, repeated any number of times

onthe literal text on (case insensitive)

\s*any whitespace character, repeated any number of times

Negative Lookahead(?!.*on)

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

onthe literal text on (case insensitive)

Global pattern flags

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

i modifier: insensitive. Matches without distinguishing uppercase and lowercase letters

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

Regular Expression

\s*on\s*(?!.*on)

New

Syed on Arafath on Jan 7, 2015

Capt.KSD on Dec 30, 2014

chakradharalasakani on Dec 29, 2014

mitesh0123 on Dec 18, 2014

Aparajita61@yahoo.in on Dec 3, 2014

123chetan on Oct 28, 2014

Substitution

\n

Syed on Arafath on Jan 7, 2015

Capt.KSD on Dec 30, 2014

chakradharalasakani on Dec 29, 2014

mitesh0123 on Dec 18, 2014

Aparajita61@yahoo.in on Dec 3, 2014

123chetan on Oct 28, 2014