Regular Expressions 101

1st Alternative^[2-9]

^start of line

Character Class[2-9]

2-9one character from 2 (50₁₀) to 9 (57₁₀)

2nd Alternative[1-9]\d+$

Character Class[1-9]

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

\d+a digit, repeated at least once

$end of line

Global pattern flags

m modifier: multiline. Causes ^ and $ to match the start and end of each line, not only the start and end of the string

g modifier: global. Finds all matches instead of stopping after the first

Detailed match information will be displayed here automatically.

Search reference

Regular Expression

^[2-9]|[1-9]\d+$

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