How to access my API nodejs

Hello, When I try to access http://my_ip: 3000, an out-of-time error occurs I’m creating an api rest, but I can not connect to it. My droplet was created with the image UBUNTU-LAMP.

I installed the node with: curl -sL https://deb.nodesource.com/setup_8.x | sudo -E bash - sudo apt-get install -y nodejs

I created a test file like this:

const http = require (‘http’); const hostname = ‘my_ip’; const port = 3000;

const server = http.createServer ((req, res) => { res.statusCode = 200; res.setHeader (‘Content-Type’, ‘text / plain’); res.end (‘Hello World \ n’); });

server.listen (port, hostname, () => { console.log (Server running at http: // $ {hostname}: $ {port} /); });

Thank you for your attention!