How to make a javascript server?

[wintry berry]

I am now making a multiplayer videogame on gdevelop so I need to make a server; I have the server but not the code inside and I really don't know how to make it and how to link the game to the server... Someone to help me..?

[placid schooner]

if you want to use javascript, I would check out Express. It's a backend framework, pretty lightweight, but you can use it to build out whatever API you need. Then from your game, send requests to the API as needed.