Regular Expressions 101

Explanation

Pro

^start of line

Negated Character Class[^\D]+

+matches at least one character outside the set below:

\Dany character that's not a digit

Negated Character Class[^\W\d_a-jln-z]?

?matches at most one character outside the set below:

\Wany non-word character

\da digit

_the literal _ (95₁₀ / 137₈ / 5F₁₆)

a-jone character from a (97₁₀) to j (106₁₀) (case sensitive)

lthe literal l (108₁₀ / 154₈ / 6C₁₆) (case sensitive)

n-zone character from n (110₁₀) to z (122₁₀) (case sensitive)

$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.

26 tokens

^[^\D]+[^\W\d_a-jln-z]?$

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