Test a regular expression against sample text with matches highlighted.
| # | Match | Index | Groups |
|---|---|---|---|
| 1 | [email protected] | 14 | — |
| 2 | [email protected] | 35 | — |
g finds all matches instead of stopping at the first, i makes it case-insensitive, m changes how ^ and $ behave across multiple lines, s lets . match newlines, and u enables full Unicode matching.
No — matching runs entirely in your browser using JavaScript's native RegExp engine.
JavaScript's regex syntax has some differences from other languages (like PCRE) — check for unescaped special characters or unsupported syntax from another regex flavour.