Regex Tokens
Regular expression tokens and their meanings, with examples and categories.
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The 10 most recently added of 52 records · Select a column heading to sort.
| ID | Token | Meaning | Example | Category |
|---|---|---|---|---|
| 43 | \) | Matches a literal closing parenthesis | \(a\) | Escape |
| 44 | \[ | Matches a literal opening square bracket | \[a\] | Escape |
| 45 | \{ | Matches a literal opening curly brace | \{a\} | Escape |
| 46 | \| | Matches a literal vertical bar | a\|b | Escape |
| 47 | \^ | Matches a literal caret character | \^abc | Escape |
| 48 | \$ | Matches a literal dollar sign | abc\$ | Escape |
| 49 | \t | Matches a horizontal tab character | a\tb | Escape |
| 50 | \n | Matches a line feed character | a\nb | Escape |
| 51 | \r | Matches a carriage return character | a\rb | Escape |
| 52 | \0 | Matches a NUL character | \0 | Escape |
Free sample files (up to 10 rows): CSV JSON XML
Scope and sources
Last checked against sources: October 16, 2026.
Last changed: July 19, 2026. This is when we last changed the data or its description. It doesn’t mean the data runs up to that date.
- MDN Web Docs: Regular expressions cheatsheet (used with permission)
A complete download includes all 52 records currently held in this dataset. Check the description and sources to decide whether its scope fits your project.
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