Regular Expressions 101

Pro

Group 1([1-9]{2}|50)

1st Alternative[1-9]{2}

Character Class[1-9]{2}

{2}matches exactly 2 characters from the set below:

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

2nd Alternative50

50the literal text 50

-the literal - (45₁₀ / 55₈ / 2D₁₆)

Character Class[0-9]{3,4}

{3,4}matches between 3 and 4 characters from the set below:

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

$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

([1-9]{2}|50)-[0-9]{3,4}$

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