Convert Java Regex to javascript

Convert Java Regex to javascript regex - Stack Overflow
([a-zA-Z0-9_\-])([a-zA-Z0-9_\.+~!#$%^&*_=\'?\-]*)@[A-Za-z0-9-]+(\.[A-Za-z0-9-]+)*(\.[A-
Convert Java Regex to javascript regexStack Overflow
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