Regular Expressions 101

Pro

^start of line

Negative Lookahead(?!.*time)

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

timethe literal text time (case sensitive)

Negated Character Class[^.]*

*matches any number of characters outside the set below:

.the literal . (46₁₀ / 56₈ / 2E₁₆)

$end of line

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

Regular Expression

^(?!.*time)[^.]*$

New

testtime -> not allowed
tim etest -> allowed
.
thetimetest -> not allowed
.
the time test -> not allowed
test.my -> not allowed
my.testtime -> not allowed

Substitution

testtime -> not allowed
tim etest -> allowed
.
thetimetest -> not allowed
.
the time test -> not allowed
test.my -> not allowed
my.testtime -> not allowed