Regular Expressions 101

Pro

^start of line

Bluethe literal text Blue (case sensitive)

\ban ASCII word boundary

\S*any non-whitespace character, repeated any number of times

\h+any horizontal whitespace character, repeated at least once

Group 1([\w:]+)

Character Class[\w:]+

+matches at least one character from the set below:

\wany word character

:the literal : (58₁₀ / 72₈ / 3A₁₆)

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

Regular Expression

^Blue\b\S*\h+([\w:]+)

New

Blue Red Yellow //return Red
Blue Red::Orange Yellow //return Red::Orange
Purple Red Yellow //return nothing
Blue R_E_D //return R_E_D 
Red Blue //return nothing 
Blue.ish Yellow //return Yellow

Extraction

Blue Red Yellow //return Red
Blue Red::Orange Yellow //return Red::Orange
Purple Red Yellow //return nothing
Blue R_E_D //return R_E_D 
Red Blue //return nothing 
Blue.ish Yellow //return Yellow