Regular Expressions 101

1st Alternative^\d{1,5}$

^start of line

\d{1,5}a digit, repeated between 1 and 5 times

$end of line

2nd Alternative^\d{0,5}\.\d{1,4}$

^start of line

\d{0,5}a digit, repeated between 0 and 5 times

\.the literal . (46₁₀ / 56₈ / 2E₁₆)

\d{1,4}a digit, repeated between 1 and 4 times

$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.

Search reference

Regular Expression

^\d{1,5}$|^\d{0,5}\.\d{1,4}$

New

123
12345
12345.2156
123456
123456.12
12345.12345