regex email valid despite missing dot extension-CodePudding

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regex email valid despite missing dot extension

Time：03-01

I've this regex for email

^[_a-z0-9-] (\.[_a-z0-9-] )*(\ [a-z0-9-] )?@[a-z0-9-] (\.[a-z0-9-] )*$

my test case is johnd@c but it returned true. What's wrong here?

CodePudding user response：

This will work:

^[_a-z0-9-] (\.[_a-z0-9-] )*(\ [a-z0-9-] )?@[a-z0-9-] (\.[a-z0-9-] )$

Please note that your regex may not perfectly fit all cases nor match all cases in RFC 5322.