Regular Expressions 101

Pro

\ban ASCII word boundary

Group 1([a-zA-Z]+)

Character Class[a-zA-Z]+

+matches at least one character from the set below:

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

A-Zone character from A (65₁₀) to Z (90₁₀) (case sensitive)

: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

\b([a-zA-Z]+):

New

animal: cat -> ["animal"]
animal: (mountain lion) -> ["animal"]
month: february day: sunday -> ["month", "day"]
date: (july 31) weather: (blue sky) -> ["date", "weather"]