nodejs

1-http.createServer(function(request,response) {}).listen(8080);
2-require('fs')- fs.createReadStream/write -readStream.on(data)
3-response.write
4-request.pipe(newfile)
5-app=express.createServer()
6-app.get('/',function(request,response)
7-app.get(/:username) -- req.param.username
8-io=express.listen(app)
9-io.socket.on('connection',function(client))
10-io.connect()
11-client.emit(-,-)
12-server=io.connect server.on()
13- socket.emit
14-client.broadcast.emit
15-server.on / clent.on
16-client.get client.set
17-client.broadcast.emit("messages", name + ": " + message);
18-
19