Regular Expressions 101

Pro

Character Class[+-]?

?matches at most one character from the set below:

+the literal + (43₁₀ / 53₈ / 2B₁₆)

-the literal - (45₁₀ / 55₈ / 2D₁₆)

\ban ASCII word boundary

Character Class[1-9]

1-9one character from 1 (49₁₀) to 9 (57₁₀)

Character Class[0-9]*

*matches any number of characters from the set below:

0-9one character from 0 (48₁₀) to 9 (57₁₀)

\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.

26 tokens

[+-]?\b[1-9][0-9]*\b

New

-90
90
-0
-00
1
-1
0
00
+2 This is a test 2 and -10 with 0 and +10

-90
90
-0
-00
1
-1
0
00
+2 This is a test 2 and -10 with 0 and +10