Regular Expressions 101

'the literal ' (39₁₀ / 47₈ / 27₁₆)

Group 1(\\x[0-9a-fA-F]{2}|\\u[0-9a-fA-F]{4})*

*repeats the group contents below any number of times:

1st Alternative\\x[0-9a-fA-F]{2}

\\the literal \ (92₁₀ / 134₈ / 5C₁₆)

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

Character Class[0-9a-fA-F]{2}

{2}matches exactly 2 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)

2nd Alternative\\u[0-9a-fA-F]{4}

\\the literal \ (92₁₀ / 134₈ / 5C₁₆)

uthe literal u (117₁₀ / 165₈ / 75₁₆) (case sensitive)

Character Class[0-9a-fA-F]{4}

{4}matches exactly 4 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)

'the literal ' (39₁₀ / 47₈ / 27₁₆)

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

'(\\x[0-9a-fA-F]{2}|\\u[0-9a-fA-F]{4})*'

New

'\x0F'
'\u0fff'
'23'
'teset'
'wer.fee'

'\x0FF'
'\u0fff\x'
'\u0fff\'\'
'\u0fff"'
'\u0fff\b'
'\u0fff\f'
'\u0fff\n'
'\u0fff\r'
'\u0fff\t'
'\u0fff\v'
'\u0fff\n'
'\u0fff\\'
'\u0fff\r'
'\u0fff\\u2028'
'\u0fff\\u2029'

Regular Expression

Extraction