Regular Expressions 101

^start of line

.*any character (except for line terminators), repeated any number of times

\<the literal < (60₁₀ / 74₈ / 3C₁₆)

optionthe literal text option (case sensitive)

.*any character (except for line terminators), repeated any number of times

value="the literal text value=" (case sensitive)

Group 1([a-z]*)

Character Class[a-z]*

*matches any number of characters from the set below:

a-zone character from a (97₁₀) to z (122₁₀) (case sensitive)

"the literal " (34₁₀ / 42₈ / 22₁₆)

.*any character (except for line terminators), repeated any number of times

Positive Lookahead(?=selected=(?:'|")selected(?:'|"))

selected=the literal text selected= (case sensitive)

Non-Capturing Group(?:'|")

1st Alternative'

'the literal ' (39₁₀ / 47₈ / 27₁₆)

2nd Alternative"

"the literal " (34₁₀ / 42₈ / 22₁₆)

selectedthe literal text selected (case sensitive)

Non-Capturing Group(?:'|")

1st Alternative'

'the literal ' (39₁₀ / 47₈ / 27₁₆)

2nd Alternative"

"the literal " (34₁₀ / 42₈ / 22₁₆)

.*any character (except for line terminators), repeated any number of times

$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

^.*\<option.*value="([a-z]*)".*(?=selected=(?:'|")selected(?:'|")).*$

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