Regular Expressions 101

Explanation

Pro

1st Alternative^0$

^start of line

0the literal 0 (48₁₀ / 60₈ / 30₁₆)

$end of line

2nd Alternative^[1-9](?:\.[0-9]{1,2})?$

^start of line

Character Class[1-9]

1-9one character from 1 (49₁₀) to 9 (57₁₀)

Non-Capturing Group(?:\.[0-9]{1,2})?

?repeats the group contents below at most once:

\.the literal . (46₁₀ / 56₈ / 2E₁₆)

Character Class[0-9]{1,2}

{1,2}matches between 1 and 2 characters from the set below:

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

$end of line

3rd Alternative^10(?:\.00?)?$

^start of line

10the literal text 10

Non-Capturing Group(?:\.00?)?

?repeats the group contents below at most once:

\.the literal . (46₁₀ / 56₈ / 2E₁₆)

0the literal 0 (48₁₀ / 60₈ / 30₁₆)

0?optionally matches the literal 0 (48₁₀ / 60₈ / 30₁₆)

$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

^0$|^[1-9](?:\.[0-9]{1,2})?$|^10(?:\.00?)?$