Online Regex Playground and Tester
Regex Controls
Regex Cheatsheet
. Any char
\d Digit
\w Word char
\s Whitespace
\D Not a digit
\W Not a word char
\S Not whitespace
[abc] Chars a, b, or c
[^abc] Not a, b, or c
[a-z] Chars a to z
^
Start of string
$ End of string
\b Word boundary
(...) Capture group
a|b a or b
? 0
or 1
* 0 or more
+ 1 or more
{n} Exactly n times
{n,m} n to m times
(?=...) Positive lookahead
(?<=...)< /span> Positive lookbehind
(?!...) Negative lookahead
(? Negative lookbehind