Test regular expressions with real-time matching, capture groups, and flag support.
Regular expressions (regex) are patterns used to match character combinations in strings. They're a powerful tool for text processing, validation, and search operations.
. — Any character except newline\d — Digit (0-9)\w — Word character (a-z, A-Z, 0-9, _)\s — Whitespace* — Zero or more+ — One or more? — Zero or one[abc] — Character class(group) — Capture group^ / $ — Start / end of string