Allow regex pattern to be repeated if it is comma-separated?

Question

I have a JavaScript regex for email addresses:

/^(([^<>()\[\]\\.,;:\s@"]+(\.[^<>()\[\]\\.,;:\s@"]+)*)|(".+"))@((\[[0-9]{1,3}\.[0-9]{1,3}\.[0-9]{1,3}\.[0-9]{1,3}\])|(([a-zA-Z\-0-9]+\.)+[a-zA-Z]{2,}))$/

Fiddle here: https://regex101.com/r/8Z9ORb/1

Used in the .Validate plugin, this will allow test@test.com but not test@test and other bad email addresses.

But how can I allow this pattern to be repeated if comma separated? Ie, how can I allow:

• test@test.com
• test@test.com,example@exmaple.com
• test@test.com, example@exmaple.com, Nth@moreemails.com (note the spaces)

While not allowing bad emails in the CSV or a bad CSV, like:

• test@test.com,testtest.com
• test@test.com and test2@test2.com

Answer 1

This seems to work? But I'm no regexpert.

/^((([^<>()\[\]\\.,;:\s@"]+(\.[^<>()\[\]\\.,;:\s@"]+)*)|(".+"))@((\[[0-9]{1,3}\.[0-9]{1,3}\.[0-9]{1,3}\.[0-9]{1,3}\])|(([a-zA-Z\-0-9]+\.)+[a-zA-Z]{2,}))+(,|, |$))*$/

https://regex101.com/r/8Z9ORb/2