Regular Expressions 101

Pro

Non-Capturing Group(?:\s|^)

1st Alternative\s

\sany whitespace character

2nd Alternative^

^start of line

\ban ASCII 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

(?:\s|^)\b

New

The quick brown fox jumped over the lazy dog.
The lazy dog ignored the fox and went back to sleep.

The quick brown fox jumped over the lazy dog.
The lazy dog ignored the fox and went back to sleep.