Regular Expressions 101

,*the literal , (44₁₀ / 54₈ / 2C₁₆) , repeated any number of times

Group 1(\s*\b(?:cat|dog|animals|adam))

\s*a Unicode whitespace character, repeated any number of times

\ba Unicode word boundary

Non-Capturing Group(?:cat|dog|animals|adam)

1st Alternativecat

catthe literal text cat (case sensitive)

2nd Alternativedog

dogthe literal text dog (case sensitive)

3rd Alternativeanimals

animalsthe literal text animals (case sensitive)

4th Alternativeadam

adamthe literal text adam (case sensitive)

\ba Unicode word boundary

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

,*(\s*\b(?:cat|dog|animals|adam))\b

New

I have a lot of animals,       cat and a     dog

I have a lot of animals cat and a  dogy
I have a lot of animals, cat and a  dogy

I have a lot of animals,       cat and a     dog

I have a lot of animals cat and a  dogy
I have a lot of animals, cat and a  dogy