ExpressJS-Localhost not showing anything

This is my first time I am running ExpressJS. But the Localhost is not responding any data.

Below is the Code I have written

const express=require('express');
const app=express();


app.get('/',(req,res)=>
{
    
});

app.listen(3000,()=>console.log("running at 3000 port"));

I have tried to change the localhost to 4000,5000.But same error.

Additional Information: Running on Ubuntu 16.10

Any clue of whats happening over here?

You're not giving the browser anything to render. Try following the Hello World example in the docs and you might be pleasantly surprised:

https://expressjs.com/en/starter/hello-world.html