socket emit to

1const socket = io('ws://localhost:3000');
2socket.on('connect', () => {  
3  // either with send()  
4  socket.send('Hello!');
5  // or with emit() and custom event names  
6  socket.emit('salutations', 'Hello!', { 'mr': 'john' }, Uint8Array.from([1, 2, 3, 4]));});
7// handle the event sent with socket.send()
8socket.on('message', data => {
9  console.log(data);
10});
11// handle the event sent with socket.emit()
12socket.on('greetings', (elem1, elem2, elem3) => {
13  console.log(elem1, elem2, elem3);
14});