Create getter and setter module in NodeJS

var number, origin, destination;

exports.setNumber = function (num) {

number = num;

};

exports.setOrigin = function (o) {

origin = o;

};

exports.setDestination = function (d) {

destination = d;

};

exports.getInfo = function () {

return {

number      : number,

origin      : origin,

destination : destination

};

};

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user in app.js

var flight = require('./flight');

flight.setOrigin('Kensington');

flight.setDestination('London');

flight.setNumber(356);

console.log(flight.getInfo());

Enable cross origin ( CORS ) in NodeJs

app.all('*', function(req, res, next) {
res.header("Access-Control-Allow-Origin", "*");
res.header('Access-Control-Allow-Methods', 'GET,PUT,POST,DELETE,OPTIONS');
res.header("Access-Control-Allow-Headers", "X-Requested-With,X-Powered-By,Content-Type");
if (req.method === 'OPTIONS') {
res.status(200).end();
} else {
next();
}
});

How to Replace Object With Named Parameters in ES6 ( Error handing of undefined in JavaScript )

function loadProfiles(userNames = [],  {profilesClass, reverseSort} = {}) {
   profilesClass = profilesClass || ".user-profile";
   reverseSort   = reverseSort   || false;

  if (reverseSort) {
    userNames = _reverse(userNames);
  }

  _loadProfilesToSideBar(userNames, profilesClass);
}