This tutorial describes the steps to deploy nodejs app in Heroku.

• Download and install the Heroku CLI.
• cd into the project folder e.g cd notesapp
• Login to the heroku using the command: heroku login
• Initialize git repository (if not already initialized) by using the command: git init
• Assign remote directory to the git by using the command: git remote add heroku <URL Here>
• To remove existing remote origin URL, use the command: git remote remove origin
• To update/reset remote origin URL, use the command: git remote set-url origin git://new.url.here
• To note the changes in working directory run the command: git add .
• To save your changes in the local repository with comment, run the command: git commit -am “make it better”
• To push the changes to the remote directory, run the command: git push heroku master

TIP: If you want to force the changes from local repository to the remote directory then use the following command (not recommended though):

git push –force heroku master

If you get port error, then try to change the app.listen method as follows:

app.listen(process.env.PORT || 5000, function(){
   console.log('Server is running at port : ' + 5000);
});