HTML5 Email Input Pattern Attribute

Question

I’m trying to make a html5 form that contains one email input, one check box input, and one submit input. I\'m trying to use the pattern attribute for the email input but I

Answer 1

One more solution that is built on top of w3org specification.
Original regex is taken from w3org.
The last "* Lazy quantifier" in this regex was replaced with "+ One or more quantifier".
Such a pattern fully complies with the specification, with one exception: it does not allow top level domain addresses such as "foo@com"