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find a string with a list of words, a char between them. and the final word can end with any string using regex

I have a list of words:

const words = ["apple", "orange", "tomato"]

const str = "apple.orange.tomato.$COULD_$_BE_ANY_STRING_HERE"

I am looking for the regex to validate this string structure.

the string cannot end with "."
the string must contain at least one "." char
the last string should support the "$" char

some patterns I've tried: ^((apple|orange|tomato)(\\.|$))*$ but it seems to allow the string to end with "." and to not contain a "."

about 4 years ago · Juan Pablo Isaza

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Accepted Answer · 2022-08-31T05:07:10.815Z

You can use this expression to start with one of the words at least one followed by dot ^((apple|orange|tomato)\.)+?, then optionally any letter or underscore \w*?, and not end with dot [^\.]$

^((apple|orange|tomato)\.)+?\w*?[^\.]$

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find a string with a list of words, a char between them. and the final word can end with any string using regex

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