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JavaScript Build a Simple Dynamic Site with Node.js Creating a Simple Server in Node.js Creating a Simple Server

Posted by Isabelle Caspersson
Isabelle Caspersson
6,679 Points

Can't create webserver

I try to do this code below to create a webserver. When I write node app.js in the console it, should say Hello world. But this comes up:

Module.load (module.js:566:32)
at tryModuleLoad (module.js:506:12)
at Function.Module._load (module.js:498:3)
at Function.Module.runMain (module.js:694:10)
at startup (bootstrap_node.js:204:16)
at bootstrap_node.js:625:3

My code:

var http = require('http'); http.createServer(function (request, response) { response.writeHead(200; {'Content-Type', 'text/plain'}); response.end('Hello World\n'); })listen(3000); console.log(Server running at http://<workspace-url>/);

2 Answers

Ben Slivinn
Ben Slivinn
10,156 Points
Ben Slivinn
Ben Slivinn
10,156 Points
node.js 
var http = require('http');
http.createServer(function (request,response)
  {
    response.writeHead(200 {'Content-Type', 'text/plain'});
    response.end('Hello World\n'); 
  }
);
listen(3000);
console.log(Server running at http://<workspace-url>/);

your code can't find "listen(3000)" method. you should assign "http.createServer" to a variable, and call "listen(3000)" from the variable.

Correct:

node.js 
var http = require('http');
var server = http.createServer(function (request,response)
  {
    response.writeHead(200 {'Content-Type', 'text/plain'});
    response.end('Hello World\n'); 
  }
);
server.listen(3000);
console.log(Server running at http://<workspace-url>/);

Or Nodejs preferred way (using ES6)(Advanced Way);

node.js 
const http = require('http');
const hostname = "http://<workspace-url>/"
const port = 3000;

const server = http.createServer((req, res) => {
  res.statusCode = 200;
  res.setHeader('Content-Type', 'text/plain');
  res.end('Hello World\n');
});

server.listen(port, hostname, () => {
  console.log(`Server running at ${hostname}:${port}/`);
});

Happy Coding!

Isabelle Caspersson
Isabelle Caspersson
6,679 Points
Isabelle Caspersson
Isabelle Caspersson
6,679 Points

great thanks!!