Pattern
Flags
Subject text
Code generation
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Replacement string: $& whole match, $1… groups, $\` before, $' after, $$ literal dollar.
Lists each match in order with position and captured text.
One rule per line. Optional: pattern || sample || shouldMatch(true/false). If you only enter a pattern, the subject text above is used.
Escape for regex literal
Stats
Enter a pattern and subject to see stats.
Named groups (ES2018+)
If the pattern uses (?<name>...), names appear below when there is a match.