node.js基于express使用websocket的方法

npm install socket.io --save

var app = express();

var server = require('http').Server(app);
var io = require('socket.io')(server);

app.use(function(req, res, next){
 res.io = io;
 next();
});

var port = 3000;
app.set('port', port);
server.listen(port);

io.on('connection', function (socket) {
 socket.emit('news', { hello: 'world1' });
 socket.on('my other event', function (data) {
 console.log(data);
 });
});

<script src='javascripts/socket.io-1.4.5.js'></script>
var socket = io.connect("http://localhost:3000");
socket.on('news', function (data) {
 console.log(data);
 alert(data);
 socket.emit('my other event', { my: 'data' });
});

router.get('/', function(req, res, next) {
 //只有當(dāng)前頁面可以獲得
 res.io.on('connection', function(socket) {
 socket.emit('news', {
 hello: 'world'
 });
 socket.on('my other event', function(data) {
 console.log(data);
 });
 });
 //所有頁面都可以獲得
 var io = require("../app").io;
 io.emit("news",{hello:"myworld"});
 res.render("pclogin.ejs", {});
});