Building real time app with Socket.io and Node.js

来源：互联网发布：淘宝发送优惠券给买家编辑：程序博客网时间：2024/06/06 00:33

Socket.io is a framework which implement WebSocket in HTML5. 我们可以通过其和Node.js实现实时通信。

var http = require('http').Server(app);var io = require('socket.io')(http);io.on('connection', function(socket){console.log('a user connected');//监听新用户加入socket.on('login', function(obj){//将新加入用户的唯一标识当作socket的名称，后面退出的时候会用到socket.name = obj;//检查在线列表，如果不在里面就加入//向所有客户端广播用户加入//sleep(3000);socket.emit('logout', 'bbbb');console.log('加入了聊天室');});});

socket.send("aa") == socket.emit("message", "aa")

Broadcasting: socket.broadcast.emit('message', msg);

客户端代码示例：

<script src="http://ajax.googleapis.com/ajax/libs/jquery/1.7.2/jquery.min.js"></script>    <script src="http://127.0.0.1:3000/socket.io/socket.io.js"></script>    <script>        $(function(){            //var iosocket = io.connect();            var iosocket = io.connect('ws://127.0.0.1:3000');            iosocket.on('connect', function () {                $('#incomingChatMessages').append($('<li>Connected</li>'));                  iosocket.on('message', function(message) {                    $('#incomingChatMessages').append($('<li></li>').text(message));                });                iosocket.on('disconnect', function() {                    $('#incomingChatMessages').append('<li>Disconnected</li>');                });            });              $('#outgoingChatMessage').keypress(function(event) {                if(event.which == 13) {                    event.preventDefault();                    iosocket.send($('#outgoingChatMessage').val());                    $('#incomingChatMessages').append($('<li></li>').text($('#outgoingChatMessage').val()));                    $('#outgoingChatMessage').val('');                }            });        });    </script>

0 0