Character Classes
Character classes allow you to define a set of characters where any single character from that set will match.
| Expression | Description |
|---|---|
[cs] | Matches either "c" or "s" (e.g., /licen[cs]e/ matches "licence" or "license") |
[0-9] | Matches any digit from 0 to 9 |
[a-z] | Matches any lowercase letter |
[A-Z] | Matches any uppercase letter |
[0-9a-zA-Z] | Matches any alphanumeric character |
[^0-9] | Matches any character that is NOT a digit |
[^a-z] | Matches any character that is NOT a lowercase letter |