How to run a project on node.js

Question

I am a beginner to node.js and i did a sample code it shown below,

  var http = require("http");
  var server = http.createServer(function(request,response) {
   response.writeHead(200, {
    "content-Type" : "text/html"
   });
  response.end("Hello again");
 }).listen(8888);

and when i run this file on eclise Run as ------> Node project and when i open the browser with url localhost:8888 it shows web page not availble. can u guys help me to find out. I already installed node.js on my system and npm alse. am i missing something?

@N.J.Dawson i corrected that mistake again it show web page not available — user3189828
– user3189828, Commented Sep 7, 2016 at 9:33

Aurelia · Accepted Answer · 2016-09-07 09:50:02Z

2

There is no request or response object in the scope of your request callback. You need to define them as arguments of the callback function.

var http = require("http");
var server = http.createServer(function(request, response) {
  response.writeHead(200, {
    "content-Type" : "text/html"
  });
  response.end("Hello again");
}).listen(8888);

You should definitely get an error though - are you sure your IDE is set up properly?

answered Sep 7, 2016 at 9:50

Aurelia

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1 Comment

user3189828 Over a year ago

i just installed enide plugin on eclipse

N.J.Dawson · Accepted Answer · 2016-09-07 09:50:34Z

0

You never accept the "request" variable. Below is a working version of what you're attempting.

var http = require("http");
var server = http.createServer();

server.on('request', function(request, response) {
   response.writeHead(200, {
    "content-Type" : "text/html"
   });
  response.end("Hello again");
});

server.listen(8888);

edited Sep 7, 2016 at 9:50

answered Sep 7, 2016 at 9:43

N.J.Dawson

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7 Comments

Aurelia Over a year ago

Except he does: check the docs for createServer. The first argument can be the request handler.

N.J.Dawson Over a year ago

@Gant I did check the docs, but missed that, he doesn't define the param to receive "request" is probably more accurate then

N.J.Dawson Over a year ago

@Gant not sure if you're being sarcastic or not, you seem to be a very curt fellow. If the edit makes the content makes sense, I have no idea what the problem is with it being "minimalistic"

user3189828 Over a year ago

@N.J.Dawson i tried your code it shows web page not available

N.J.Dawson Over a year ago

@user3189828 running just that code & accessing localhost:8888 returns a webpage with "Hello again" for me - as Gant said, have you got it set up correctly in terms of development environment?

|

Emran · Accepted Answer · 2016-09-07 10:15:06Z

0

Can you please tell me where you found response object? http.createServer return a callback function which have two arguments. They are response and request. response use for send data/information to client and request use for get data/information from client. So in your http.createServer callback function add response and request arguments. After that in callback function use response object. Like this.

var http = require("http");
var server = http.createServer(function(request, response) {
    response.writeHead(200, {
        "content-Type" : "text/html"
    });
    response.end("Hello again");
 }).listen(8888);

answered Sep 7, 2016 at 10:15

Emran

1881 silver badge13 bronze badges

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