Regular Expressions 101

^start of line

Non-Capturing Group(?:0{0,})

0{0,}the literal 0 (48₁₀ / 60₈ / 30₁₆) , repeated any number of times

Group 1((?:[1-9]{1,2}|100)?(?:\.\d+)?)

Non-Capturing Group(?:[1-9]{1,2}|100)?

?repeats the group contents below at most once:

1st Alternative[1-9]{1,2}

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

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

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

2nd Alternative100

100the literal text 100

Non-Capturing Group(?:\.\d+)?

?repeats the group contents below at most once:

\.the literal . (46₁₀ / 56₈ / 2E₁₆)

\d+a digit, repeated at least once

%?optionally matches the literal % (37₁₀ / 45₈ / 25₁₆)

$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

^(?:0{0,})((?:[1-9]{1,2}|100)?(?:\.\d+)?)%?$

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