Regular Expressions 101

1st Alternative^[0-1]+(\.[0-9])

^start of line

Character Class[0-1]+

+matches at least one character from the set below:

0-1one character from 0 (48₁₀) to 1 (49₁₀)

Group 1(\.[0-9])

\.the literal . (46₁₀ / 56₈ / 2E₁₆)

Character Class[0-9]

0-9one character from 0 (48₁₀) to 9 (57₁₀)

the literal (32₁₀ / 40₈ / 20₁₆)

2nd Alternative [10-11]$

the literal (32₁₀ / 40₈ / 20₁₆)

Character Class[10-11]

1the literal 1 (49₁₀ / 61₈ / 31₁₆)

0-1one character from 0 (48₁₀) to 1 (49₁₀)

1the literal 1 (49₁₀ / 61₈ / 31₁₆)

$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

^[0-1]+(\.[0-9]) | [10-11]$

New