regular expression email beginning with code example
Example 1: email regex
[\w._%+-]+@[\w.-]+\.[a-zA-Z]{2,3}
Example 2: email regex
/^(([^<>()\[\]\\.,;:\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,}))$/