Regular Expressions 101

^start of line

Character Class[\w:-]+

+matches at least one character from the set below:

\wany word character

:the literal : (58₁₀ / 72₈ / 3A₁₆)

-the literal - (45₁₀ / 55₈ / 2D₁₆)

$end of line

Negative Lookbehind(?<!:)

:the literal : (58₁₀ / 72₈ / 3A₁₆)

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.

Search reference

Regular Expression

^[\w:-]+$(?<!:)

New

aaa:bbb-cool
aaa:bbb-cool-
aaa-22-bbb_cool3
aaa:bbb-cool:
aaa_bbb-cool:
aaa_bbb-cool
bbbb:>dd
hihi%
大家好
0000000000
11111:2222:3333
11111:2222:3333:
DDD@@@1
大家好