i-Robi

{
   "C0":   16.35,
  "C#0":   17.32,
  "Db0":   17.32,
   "D0":   18.35,
  "D#0":   19.45,
  "Eb0":   19.45,
   "E0":   20.60,
   "F0":   21.83,
  "F#0":   23.12,

i-Robi

Creating a simple Node.js - Express - socket.io app

Installing packages

Node.js and npm

Dowload Node.js from their website and install the package. npm should be in there.

Express

i-Robi

// Server

var admin = io.of('/admin'),
    client = io.of('');

admin.on('connection', function (socket) {
  socket.on('message', function(m) {
    console.log(m);
  });