无法让Node.js Express代码在Cloud 9中说出“Hello World”

Question

Been experimenting with Cloud 9 and have been trying to use the example code from the Express website in order to get 'Hello World!'. I tried listening to several different ports/ip referring to https://docs.c9.io/docs/run-an-application and Running Hello World using Node js Express in cloud 9IDE . Although the listener will run, it will never close or return anything after that. Does anyone know why this may be? Here's my code:

var express = require('express');
var app = express();

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

app.listen(process.env.PORT, process.env.IP, function(){
    console.log('LISTENING');
});

Answer 1

You should run the app.js from the c9 command, which is just below, in the editor. Cloud9 has it's own default path to run. Default like something :

https://helloexpress-abcd.c9.io/

helloexpress is the project name you defined, in your case it's different,

abcd is the username and the rest are the defaults

This should show Hello World