How could others, on a local network, access my NodeJS app while it's running on my machine?

Question

I have a pretty straight-forward question. I made a web game with NodeJS, and I can successfully play it by myself with multiple browser windows open side-by-side; however,

Answer 1

Faced similar issue with my Angular Node Server(v6.10.3) which set up in WIndows 10. http://localhost:4201 worked fine in localhost. But http://{ipaddress}:4201 not working in other machines in local network.

For this I updated the ng serve like this

//Older ng serve in windows command Prompt

ng serve --host localhost --port 4201

//Updated ng serve
//ng serve --host {ipaddress} --port {portno}
ng serve --host 192.168.1.104 --port 4201

After doing this modification able to access my application in other machines in network bt calling this url

http://192.168.1.104:4201  
//http://{ipaddress}:4201