A simple demo chat app built on Node.js, Express.js and Socket.io.

https://owan-nodejs-chat-app.herokuapp.com

To setup and run the project for local development / testing, you will need to use Node.js and NPM. I don't explicitly specify a minimum Node.js/NPM version for the app but I recommend going with whatever the latest LTS version is at the point in time you are setting things up. The minimum vesion of Node.js that I have tested this app on is 10.16.3.

Installers can be found here: https://nodejs.org/en/download

Another option for installing Node is the Node Version Manager (nvm), which is a POSIX-compliant bash script to manage multiple active Node.js versions. Instructions for installing and using nvm to install Node and NPM can be found at https://github.com/nvm-sh/nvm.

The code for the chat app can be found at the public GitHub repo https://github.com/owanhunte/nodejs-chat-app. Either clone the repo to a local folder on your machine or download and extract the archive if you don't have Git installed.

Open a terminal window session, or the equivalent on your machine, and enter the following command to install all the Node modules needed to run the app:

npm install

After doing an npm install enter the following npm run command:

npm run dev

This will start the app and set it up to listen for incoming connections on port 3000. Open up your browser of choice and go to the url http://localhost:3000/ to start using the app itself. The npm run dev command automatically runs the app using the nodemon script so any changes you make to the app's javascript, CSS or HTML code will automatically restart it.

To configure the port that the app listens on at startup, copy the file .env.example, located at the root of the project, to .env and set an appropriate value for the PORT environment variable listed in the file. This must be done before the app is started.