Diving into Express.js

When building web applications with Node.js, we can either work directly with the core Node.js HTTP module or use a more structured framework like Express.js. Express.js is one of the most popular web application frameworks for Node.js, and it simplifies the process of handling HTTP requests, routing, middleware, and more.

Express.js: Simplified Web Framework

Express.js is a web framework built on top of Node.js that simplifies routing, request handling, and middleware usage. It is designed to streamline development, making it easier to build complex web applications.

With Express, you can handle routing, HTTP methods, middleware, and more with fewer lines of code and better structure. It abstracts away much of the complexity of working directly with Node.js’s core HTTP module and provides a more intuitive and powerful API.

In comparison to the more verbose approach of using Node.js’s HTTP module, Express.js allows you to set up an HTTP server with fewer lines of code:

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

app.get("/", (req, res) => {
  res.send("Hello, world!");
});

app.listen(3000, () => {
  console.log("Server running on http://localhost:3000");
});