Regular Expressions 101

Pro

^start of line

Negative Lookahead(?!.*\btime\b)

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

\ban ASCII word boundary

timethe literal text time (case insensitive)

\ban ASCII word boundary

Negated Character Class[^.^\[\]{}\n]*

*matches any number of characters outside the set below:

.the literal . (46₁₀ / 56₈ / 2E₁₆)

^the literal ^ (94₁₀ / 136₈ / 5E₁₆)

\[the literal [ (91₁₀ / 133₈ / 5B₁₆)

\]the literal ] (93₁₀ / 135₈ / 5D₁₆)

{the literal { (123₁₀ / 173₈ / 7B₁₆)

}the literal } (125₁₀ / 175₈ / 7D₁₆)

\na line-feed (newline) character (ASCII 10)

$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

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

Detailed match information will be displayed here automatically.

25 tokens

Regular Expression

^(?!.*\btime\b)[^.^\[\]{}\n]*$

New

testtime -> allowed
testTime -> allowed
tim etest -> allowed
thetimetest -> allowed
the time test -> not allowed
test[my -> not allowed
my}test -> not allowed
test^time -> not allowed