How to check if a string only contains certain characters in js?

I'm making a discord bot that allows you to play hangman. I need to check if a string only contains lowercase english letters and hyphens ("-").

I know how to check if it contains or doesn't contain certain characters, but how do I check if it only contains specific characters?



Read more here: https://stackoverflow.com/questions/66335501/how-to-check-if-a-string-only-contains-certain-characters-in-js

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