the best email regex code example

Example 1: regex for email

^[\w-\.]+@([\w-]+\.)+[\w-]{2,4}$
//will validate for:  [email protected] etc

Example 2: regex for email

# regrex for email for javascript

/^(([^<>()\[\]\\.,;:\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,}))$/