Test regular expressions with real-time match highlighting
. Any character\d Digit [0-9]\w Word character\s Whitespace^ Start of string$ End of string* 0 or more+ 1 or more? 0 or 1{n,m} n to m repeats[abc] Character set(...) Capture groupRegular expressions (regex) are patterns used to match character combinations in strings. They're essential for form validation, data extraction, search-and-replace, and log parsing.