How to reconnect to websocket after close connection [duplicate]

Answer 1

Flawless implementation:

var socket;

const socketMessageListener = (event) => {
  console.log(event.data);
};

const socketOpenListener = (event) => {
  console.log('Connected');
  socket.send('hello');
};

const socketCloseListener = (event) => {
  if (socket) {
    console.error('Disconnected.');
  }
  socket = new WebSocket('ws://localhost:8080');
  socket.addEventListener('open', socketOpenListener);
  socket.addEventListener('message', socketMessageListener);
  socket.addEventListener('close', socketCloseListener);
};

socketCloseListener();

To test it:

setTimeout(()=>{
  socket.close();
},5000);

Edit: Take note of the Exponential Backoff implementation (at the linked thread by top comment: https://stackoverflow.com/a/37038217/8805423), not in above code BUT VERY VERY CRUCIAL.

Edit again: Check out back from primus: https://www.npmjs.com/package/back, it's a flexible sexy implementation.