// server.jsconstServer=require('ws-simple')constserver=newServer({port: 3000})server.on('connection',socket=>{// Receive message from clientsocket.on('message',message=>{message// output: 'foo'// Send message to clientsocket.send('bar')})})
// client.jsconstsocket=newWebSocket('ws://127.0.0.1:3000')socket.addEventListener('open',()=>{console.log('connected')})// Receive message from serversocket.addEventListener('message',e=>{console.log(e.data)})// Send message to serversendMsgBtn.addEventListener('click',()=>{socket.send('foo')})