How to know if JavaScript string.replace() did anything?

Question

The replace function returns the new string with the replaces, but if there weren\'t any words to replace, then the original string is returned. Is there a way to k

Answer 1

As a workaround you can implement your own callback function that will set a flag and do the replacement. The replacement argument of replace can accept functions.

Answer 2

have a look at string.match() or string.search()