Use this tool to test regular expressions in JavaScript. Matches will be displayed below, groups to the right. Note this tool only displays the first match found.
| Basics | |
|---|---|
| . | Any non-newline char |
| \s | Any whitespace char |
| \d | Any digit |
| ^ | Start of line |
| $ | End of line |
| \ | Character Escape |
| More | |
|---|---|
| \n | Newline |
| \t | Tab |
| [abc] | Any single char: a, b, or c |
| [^abc] | Any char except: a, b, or c |
| [a-z] | Any char a to z |
| [a-zA-Z] | Any char a to z OR A to Z |
| Quantifiers | |
|---|---|
| * | 0 or more |
| + | 1 or more |
| ? | 0 or 1 |
| {2} | Exactly 2 |
| {3, 6} | Between 3 and 6 |
| {4,} | 4 or more |
| Groups | |
|---|---|
| (...) | Capturing Group |
| (?:...) | Non-capturing group |
| (a|b) | Match a or b |
| (...)? | Optional match group |
| (\d\d) | Match any two digits |
| (joe) | Match word 'joe' |