Regular Expressions 101

Pro

^start of line

Group 1([.:]\d+|\d+([.:]\d+)?)

1st Alternative[.:]\d+

Character Class[.:]

.the literal . (46₁₀ / 56₈ / 2E₁₆)

:the literal : (58₁₀ / 72₈ / 3A₁₆)

\d+a digit, repeated at least once

2nd Alternative\d+([.:]\d+)?

\d+a digit, repeated at least once

Group 2([.:]\d+)?

?repeats the group contents below at most once:

Character Class[.:]

.the literal . (46₁₀ / 56₈ / 2E₁₆)

:the literal : (58₁₀ / 72₈ / 3A₁₆)

\d+a digit, repeated at least once

$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

^([.:]\d+|\d+([.:]\d+)?)$

New

87887
8787.878
8878:98
abc
989ab
8987.89:87
3
.33

87887
8787.878
8878:98
abc
989ab
8987.89:87
3
.33