JavaScript Regex Interactive Reference

Which strings will a regular expression match? Quickly test various regular expresions against a large list of English words.

run → any string containing the substring "run"

run|ran → any string containing the substring "run" or "ran"

^hot → any string that starts with "hot"

hot$ → any string that ends with "hot"

h.t → any string that contains "h", followed by any character, followed by "t", such as "hot" and "hat"

pro.*ing → any string that contains "pro", followed by any number of characters, followed by "ing"

(ing|ed)$ → either "ing" or "ed", followed by the end of the string

cars?$ → strings that end in "car", with an optional "s" at the end

^.......$ → Any seven character long string

^.......?.?$ → Any six, seven, or eight character long string