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

Comparing the before and after strings is the easiest way to check if it did anything, there's no intrinsic support in String.replace().

[contrived example of how '==' might fail deleted because it was wrong]