1.	Start by launching a text editor of your choice.
2.	Next, type the following into the text editor you’ve just opened:
var http = require('http'); http.createServer(function (req, res) res.writeHead(200, {'Content-Type': 'text/html'}); res.end('Hello World!');
}). listen (8080);
3.	Save the file, then exit. Open the PowerShell, and enter the following: node \users\<your_username>\myprogram.js
It will look like nothing has happened. In reality, your script is running in the background. You may see a Windows Defender notice about allowing traffic – for now, click Allow.
4.	Next, open a web browser, and enter the following into the address bar: http://localhost:8080
In the very upper-left corner, you should see the text Hello World!
Right now, your computer is acting like a server. Any other computer that tries to access your system on port 8080 will see the Hello World notice.
To turn off the program, switch back to PowerShell and press Ctrl+C. The system will switch back to a command prompt. You can close this window whenever you are ready.