<script src="https://alicdn.qun.hk/vendor/io/socket.io.min.js"></script>
<script>
 var socket = io('https://s2.chat.qun.hk?roomId=房间号');
 socket.on('connect', function () {
 console.log('connected');
 socket.on('chat', function (message, author) {
 console.log(message, author);
 });
 socket.emit('chat', '1112', 'xialei');
 });
</script>