Simple application does not display

nodejs

#1

Hello, sometime ago i create some workspace and work fine. Today i became to work and try to run some code, but no luck.
In console:

Your code is running …
Example app listening on port 3000!

In browser:

ERR_CONNECTION_TIMED_OUT or No application seems to be running here!

Simple code:
var express = require(‘express’);
var app = express();

app.get('/', function (req, res) {
  res.send('Hello World!');
});

app.listen(3000, function () {
  console.log('Example app listening on port 3000!');
});

#2

Try listening on port 8080 and IP adress 0.0.0.0 instead. See also https://docs.c9.io/docs/run-an-application.


#3

Today all working fine.