True javascript email regex

email-regex.js

/**
 * Validate email function with regualr expression
 * See http://regex101.com/r/pN0fP5
 * If email isn't valid then return false
 * 
 * @param email
 * @return Boolean
 */
function validateEmail (email) {
	var emailReg = new RegExp(/^(("[\w-\s]+")|([\w-]+(?:\.[\w-]+)*)|("[\w-\s]+")([\w-]+(?:\.[\w-]+)*))(@((?:[\w-]+\.)*\w[\w-]{0,66})\.([a-z]{2,6}(?:\.[a-z]{2})?)$)|(@\[?((25[0-5]\.|2[0-4][0-9]\.|1[0-9]{2}\.|[0-9]{1,2}\.))((25[0-5]|2[0-4][0-9]|1[0-9]{2}|[0-9]{1,2})\.){2}(25[0-5]|2[0-4][0-9]|1[0-9]{2}|[0-9]{1,2})\]?$)/i);
	
	var valid = emailReg.test(email);
 
	if (!valid) {
        return false;
    } else {
    	return true;
    }
}