Regular Expressions 101

name0 the literal text name0 (case sensitive)

Character Class[0-9a-fA-Fx]*

*matches any number of characters from the set below:

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

a-fone character from a (97₁₀) to f (102₁₀) (case sensitive)

A-Fone character from A (65₁₀) to F (70₁₀) (case sensitive)

xthe literal x (120₁₀ / 170₈ / 78₁₆) (case sensitive)

the literal (32₁₀ / 40₈ / 20₁₆)

Character Class[0-9a-fA-Fx]*

*matches any number of characters from the set below:

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

a-fone character from a (97₁₀) to f (102₁₀) (case sensitive)

A-Fone character from A (65₁₀) to F (70₁₀) (case sensitive)

xthe literal x (120₁₀ / 170₈ / 78₁₆) (case sensitive)

1 the literal text 1

Character Class[1-9]

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

Character Class[0-9]*

*matches any number of 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

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Search reference

Regular Expression

name0 [0-9a-fA-Fx]* [0-9a-fA-Fx]* 1 [1-9][0-9]*$

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