4 ms·

Your regex would validate: this-is-not-a-valid-address@ @this-is-not-valid-either @

• wongarsu 6y ago
  But allowing too much is better than allowing too little, as usually you have to send an actual email to verify ownership anyways. Any regex more complex than /.+@.+/ fails some valid email address
  • linkdd 6y ago
    Which was the point of my first message.
    • PeterWhittaker 6y ago
      Surely that should be /^[^@]+@[^@]+$/ ?
      • jameshart 6y ago
        According to the RFC compliant email regex, “\@“@example.com is a valid email address, which your simplified test would reject.
        • linkdd 6y ago
          Exactly. The worst regex would be: /^[a-zA-Z0-9\-_]+@[a-zA-Z0-9\-_]+\.[a-zA-Z0-9\-_]+$/ Because it would invalidates `my-email+custom-inbox@example.com`. And that's a pattern I use to automatically sort incoming mails. Many websites use such a regex :(