prozbik

const summation = x => Number.isInteger(x) ? x * (x + 1)/2 : 'Invalid Value';

prozbik

var Nightmare = require('nightmare');
var fs = require('fs');

var getContent = function(i, data) {
  var i = i || 0;
  if(i < data.length) {
    var n = new Nightmare()
    .useragent("Mozilla/5.0 (Windows NT 6.3; WOW64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/46.0.2490.86 Safari/537.36")
    .goto(data[i])
    .wait()

prozbik

app.get('/:page?', function(req,res){
  var page = req.params.page, data; //page = requrest(:page)
  if(!page) page = 'home'; // page = home by default
  data = storage[page];
  if(!data) res.redirect('/') return;
  data.links = Object.keys(store);
  res.render('index', data);
})

var storage = {