Test and debug regular expressions with real-time matching.
. - Any character except newline\w - Word character [A-Za-z0-9_]\d - Digit [0-9]\s - Whitespace[abc] - Any of a, b, or c[^abc] - Not a, b, or c* - 0 or more+ - 1 or more? - 0 or 1{n} - Exactly n{n,} - n or more{n,m} - Between n and m^ - Start of string/line$ - End of string/line\b - Word boundary\B - Not word boundary(abc) - Capturing group(?:abc) - Non-capturing group(?<name>abc) - Named group(a|b) - Either a or b