app.js

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 = {
  home: {
    page: 'Home page',
    content: 'content for home page'
    },
  about: {
    page: 'About page',
    content: 'Some cool content for about page'
    }
  }
}

//by sorax fro screencast 1