Heroku node.js Hello World

Remarks#

login

heroku login

create app

heroku create or heroku create your_name

clone the example

git clone https://github.com/zoutepopcorn/herokuworld
cd herokuworld

visit app in your browser

https://your_name.herokuapp.com/

Optional test it local:

heroku local web

check: lolhost:5000

So whats different to a normal node.js app? package.json

"scripts": {
  "start": "node index.js"
},
"engines": {
  "node": "7.6.0"
}

index.js

process.env.PORT

Local port: 5000. Heroku will map it to port 80 on your app url.

Heroku node.js hello world

index.js

var http = require("http");

http.createServer(function(request, response) {
  response.writeHead(200, {"Content-Type": "text/plain"});
  response.write("Heroku world!");
  response.end();
}).listen(process.env.PORT);

package.json

{
  "name": "node-example",
  "version": "1.0.0",
  "description": "Hello world Heroku",
  "scripts": {
    "start": "node index.js"
  },

  "keywords": [
    "example",
    "heroku"
  ],
  "author": "Johan",
  "license": "MIT",
  "engines": {
    "node": "7.6.0"
  }
}