Regex Flags

Flags are appended after the closing delimiter of a regex to change how it works:

- g — **global**: find all matches (without it, only the first match is returned) - i — **case-insensitive**: [a-z] also matches uppercase letters - m — **multiline**: ^ matches start of each line, $ matches end of each line - s — **dotall**: . also matches newline characters \n - u — **unicode**: enables full Unicode support and stricter parsing

Flags can be combined: gi = global + case-insensitive.

In the tester, toggle flags with the buttons above the pattern input. In code, you pass them as a string: new RegExp('pattern', 'gi') or as a literal: /pattern/gi.