I'm trying to match a single quote (and other characters) in a regex like this:

/^[a-zA-ZàáâäãåąčćęèéêëėįìíîïłńòóôöõøùúûüųūÿýżźñçčšžÀÁÂÄÃÅĄĆČĖĘÈÉÊËÌÍÎÏĮŁŃÒÓÔÖÕØÙÚÛÜŲŪŸÝŻŹÑßÇŒÆČŠŽ∂ð ,.'-]+$/u

the single quote being at the end of the regex before the "-" character, but impossible to make it work with a "'" single quote character in my string in any way what so ever. so i tried to remove the single quote character like this myString.replace("'", ''), but even the replace() function doesn't remove the single quote.

I don't understand because when I test this stuff in my browser it works perfectly as intended but not in my react native code. Thanks if you have any answer for this weird "bug" !