events - Node.js code problem -

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i new node.js. having few problems in code trying. take @ code:

var http =require('http'); var url = require('url'); var events=require('events'); var e=new events.eventemitter();  var i=0; var clientlist=new array();  function user(nam,channel) { this.nam = nam; this.chan=channel; }  server = http.createserver(function(req,res) { res.writehead(200,{'content-type':'text/html'}); res.write('welcome');  var pathname = url.parse(req.url).pathname; pathname=pathname.substring(1); pathnames=pathname.split("&"); var c=new user(pathnames[0],pathnames[1]); clientlist[i++]=c;  console.log("user "+pathnames[0]+" joined channel "+pathnames[1]);  e.emit('userjoined',clientlist[i-1].nam,clientlist[i-1].chan);  e.on('userjoined',function(n,c) { res.write("new user joined name: "+n+" , joined channel "+c+"\n"); });  }); server.listen(2000);

the problems having are:

  1. i dont welcome message in browser line of code: res.write("welcome"); but,i console.log() message below in terminal

  2. the userjoined event emitted not caught. but, after close server, happens @ once. welcome message in browser, , callback userjoined event.

can tell me going wrong here? thanks

ok there several issues:

  1. you need declare e.on userjoined before call it
  2. you need res.end() in e.on userjoined.

here code fixed:

var http =require('http'); var url = require('url'); var events=require('events'); var e=new events.eventemitter();  var i=0; var clientlist=new array();  function user(nam,channel) { this.nam = nam; this.chan=channel; }  e.on('userjoined',function(res,n,c) { console.log("iuser "+pathnames[0]+" joined channel "+pathnames[1]); res.write("new user joined name: "+n+" , joined channel "+c+"\n"); res.end(); });  server = http.createserver(function(req,res) { res.writehead(200,{'content-type':'text/html'}); res.write('welcome');  var pathname = url.parse(req.url).pathname; pathname=pathname.substring(1); pathnames=pathname.split("&");  var c=new user(pathnames[0],pathnames[1]); clientlist[i++]=c;  console.log("user "+pathnames[0]+" joined channel "+pathnames[1]);  e.emit('userjoined',res,clientlist[i-1].nam,clientlist[i-1].chan);  }); server.listen(2000);

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