Test a regular expression against sample text and see every match, its position and its capture groups.
Matches update as you type. Each result shows its offset, the matched text, and any capture groups, which makes it much easier to debug a group that is matching more than you intended.
Patterns use the JavaScript regex engine, so this is the right place to test an expression destined for JavaScript, TypeScript, or JSON Schema.
Which flags are supported? All JavaScript flags: g, i, m, s, u and y. The g flag is added automatically so that every match is listed rather than just the first.