JavaScript regex for blacklisting words [duplicate]

Question

I'm trying to write a regex to blacklist certain words. I'm able to create a whitelist like /^(carrots|onions|corn)$/ but how would I convert that into a blacklist?

Edit: To clarify, I'm matching this blacklist against a whole string. For example "corndog" should be allowed. I want the regex equivalent of blacklistArray.indexOf(word) === -1

Answer 1

Use negative lookahead:

^(?!.*(?:carrots|onions|corn))