Regular Expressions 101

Pro

Positive Lookbehind(?<=href=")

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

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

Group guid(?<guid>[\w\d]{8}-([\w\d]{4}-){3}[\w\d]{12})

Character Class[\w\d]{8}

{8}matches exactly 8 characters from the set below:

\wany word character

\da digit

-the literal - (45₁₀ / 55₈ / 2D₁₆)

Group 2([\w\d]{4}-){3}

{3}repeats the group contents below exactly 3 times:

Character Class[\w\d]{4}

{4}matches exactly 4 characters from the set below:

\wany word character

\da digit

-the literal - (45₁₀ / 55₈ / 2D₁₆)

Character Class[\w\d]{12}

{12}matches exactly 12 characters from the set below:

\wany word character

\da digit

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

Positive Lookahead(?=")

"the literal " (34₁₀ / 42₈ / 22₁₆)

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

(?<=href=").*(?<guid>[\w\d]{8}-([\w\d]{4}-){3}[\w\d]{12}).*?(?=")

New

<link rel="stylesheet" type="text/css" href="https:/my.web.site/c5fb04c9-44e6-40d1-bb1f-46b170a9e53f" id="style-standard" />

${guid}.css

<link rel="stylesheet" type="text/css" href="https:/my.web.site/c5fb04c9-44e6-40d1-bb1f-46b170a9e53f" id="style-standard" />