Express js doubt site cant be reached

#1

site cant be reached error

code

const express = require(‘express’);

const app = express();

app.get(’/’, function (req, res) {
res.send(‘Welcome to JavaTpoint!’);
});

app.listen(1234, () => {

console.log('server started on https://localhost:1234');

})

#2

const express = require(‘express’);

const app = express();

app.get("/", function (req, res) {
res.send(“Welcome to JavaTpoint!”);
});

app.listen(1234, () => {

console.log('server started on https://localhost:1234');

})

#3

You havent put the commas write for the routes and requiring the package