My First Express JS!

Author: Doe Hoon LEE

We are going to learn how to set up a sever today!

What exactly it does is~

Take a look at this figure.

When we type in an URL in a browser, the browser sends a request to the server, and the server sends back a response according to the URL it received.

Express.js is a framework and we don’t actually need express to set up a server, but then..

What’s so special about Express.js?! Why do we use it?

• It takes the URL and sorts out the parameters

• It takes care of statick files or images

• It takes care of things like “Logging in”

Baic setup

# start an npm
$ npm init -y

# install express
$ npm install express

create an index file

const express = require('express');
const app = express();
const port = 3000;

app.get('/', (req, res) => {
    res.render('Hello World!!');
})

app.listen(port);