websocket-client.js

var socket = new WebSocket('ws://127.0.0.1:8889');
socket.onopen = function ( ) {
  console.log('connection is opened');
  return;
};

socket.onmessage = function ( msg ) {
  console.log(msg.data);
  return;
};

socket.onclose = function ( ) {
  console.log('connection is closed');
  return;
};