server.js

var fs = require('fs');
var data = fs.readFileSync('website/words.json');
var words = JSON.parse(data);
console.log(words);

//console.log('server is starting');
var express = require('express');

var app = express();
var server = app.listen(3000, listening);
function listening(){

}  console.log("listening...");
app.use(express.static('website'));

app.get('/add/:word/:score?', addWord);

function addWord(request, response) {
  var data = request.params;
  var word = data.word;
  var score = Number(data.score);
  var reply;
  if (!score) {
    reply= {
      msg: "You score is required."
    }
  }else {
    words[word] = score;
    var data= JSON.stringify(words, null,2);
    fs.writeFile('words.json',data,finished);

    function finished(err) {
      console.log('all set.');
    }
    reply = {
      msg: "Thank you for submitting your score."
    }
  }
    response.send(reply);
}


app.get('/all', sendAll);
function sendAll(request, response) {
  response.send(words);
}