Enter a regular expression and test text to see real-time match results with a railroad diagram visualization of the regex syntax, helping you understand and debug regular expressions
| # | Matched Text | Position | Capture Groups |
|---|---|---|---|
| {{ idx + 1 }} | {{ m.match }} |
{{ m.index }}–{{ m.index + m.match.length }} |
${{ gi }}: {{ g !== undefined ? g : ' |