Random Email Generator

random-email.js

var chars = 'abcdefghijklmnopqrstuvwxyz1234567890_';
var string = '';
var domainName = ["hitmail.com","rxdoc.biz","cox.com","126.net","126.com","comast.com","comast.net",                              "yandex.com","wegas.ru","twc.com","charter.com",];
for (var index = 0; index < 15; index++) {
    string += chars[Math.floor(Math.random() * chars.length)];
}
var finalEmail = string + "@" + domainName[Math.floor(Math.random() * domainName.length)];
console.log(finalEmail);