/nlw/share/legacy/s3/javascript/email.js

// Regular expression for validating email addresses. Not perfect,
// but close enough to eliminate the majority of invalid addresses,
// which erring on the side of caution. Adapted from here:
//
// http://fightingforalostcause.net/misc/2006/compare-email-regex.php
//

Class('Email.Page', function() {

var EMAIL_ADDRESS = "([a-zA-Z0-9_'+*$%\\^&!\\.\\-])+"
                  + "@"
                  + "(([a-zA-Z0-9\\-])+\\.)+"
                  + "([a-zA-Z0-9:]{2,4})+";

var EMAIL_ADDRESS_REGEX = new RegExp(
    "^" + EMAIL_ADDRESS + "$", "i"
);

var EMAIL_WITH_NAME_REGEX = new RegExp(
    "^[^<]+<" + EMAIL_ADDRESS + ">$", "i"
)

this.check_address = function(email_address) {
    return EMAIL_ADDRESS_REGEX.test(email_address) ||
           EMAIL_WITH_NAME_REGEX.test(email_address);
};

});