Regex Tester
Test JavaScript regular expressions against sample text with live match highlighting and capture groups.
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Quick reference
| \d \w \s | digit / word char / whitespace |
| \D \W \S | negation of the above |
| ^ $ | start / end of string |
| * + ? {n,m} | 0+, 1+, 0-1, n to m repetitions |
| (...) (?:...) | capturing / non-capturing group |
| (?<name>...) | named group |
| (?=...) (?!...) | positive / negative lookahead |
| g i m s u y | global, ignoreCase, multiline, dotAll, unicode, sticky |