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Comment by JoeAcchino | Hacker News Reader

This regexp

    [^ @]*@[^ @]*

will validate strings like `@example.com` and `joe@` and even a single `@`. Probably

    [^ @]+@[^ @]+

is what he wants, plus server side validation (that is the classic "click link to validate address" email).

Forgot the SOL/EOL markers; the above will still match a substring, e.g. xxx@xxx@xxx.com. Try:

^[^ @]+@[^ @]+$

That said, HTML5 has something even better if the input is expected to be an email address: input@type=email

Thanks for the suggestion, i will check that :)