js socket connection code example

Example 1: javascript websocket example code

var Socket = new WebSocket('ws://' + window.location.hostname + ':81/'); // The '81' here is the Port where the WebSocket server will communicate with
// The instance of the WebSocket() class (i.e. Socket here), must need to be globally defined

Socket.send("pass your data here, and it'll be String"); // This method one can call locally

Example 2: js connect to websocket

var exampleSocket = new WebSocket("wss://www.example.com/socketserver", "protocolOne");

Example 3: js socket.emit

const socket = io('ws://localhost:3000');
socket.on('connect', () => {  
  // either with send()  
  socket.send('Hello!');
  // or with emit() and custom event names  
  socket.emit('salutations', 'Hello!', { 'mr': 'john' }, Uint8Array.from([1, 2, 3, 4]));});
// handle the event sent with socket.send()
socket.on('message', data => {
  console.log(data);
});
// handle the event sent with socket.emit()
socket.on('greetings', (elem1, elem2, elem3) => {
  console.log(elem1, elem2, elem3);
});