This code is creating a basic web server using the...

September 4, 2025 at 07:37 AM

const express = require("express"); const app = express(); const port = 8080; const path = require("path"); app.use(express.urlencoded({ extended: true })); app.set("view engine", "ejs" ); app.set("view", path.join(__dirname, "views")); app.set(express.static(path.join(__dirname, "public"))); app.get("/", (req, res) => { res.send("serving working well!"); }); app.listen(port, () => { console.log("listening to port : 8080"); });

This code is creating a basic web server using the Express framework. Here's what it does in detail:

1. Imports Required Modules

  • const express = require("express");: Imports the Express framework for building web applications.
  • const path = require("path");: Imports the path module to handle directory and file paths.

2. Initializes an Express Application

  • const app = express();: Creates an instance of the Express application.
  • const port = 8080;: Defines the port the server will listen on.

3. Middleware Setup

  • app.use(express.urlencoded({ extended: true }));: Uses a built-in middleware to parse incoming URL-encoded data (useful for handling form submissions).

4. Sets Up the View Engine

  • app.set("view engine", "ejs");: Specifies EJS (Embedded JavaScript) as the templating engine for rendering dynamic HTML pages.
  • app.set("view", path.join(__dirname, "views"));: Sets the location of the directory (views) where EJS template files will be stored.

5. Static Files

  • app.set(express.static(path.join(__dirname, "public")));: (This line is incorrect and won't work as intended because app.set should set a configuration key, but it's attempting to use .static() which is middleware. It should probably be app.use(express.static(path.join(__dirname, "public")));.)

Assuming this was intended, it would serve static files (e.g., CSS, JavaScript, images) from the public directory.

6. Defines a Route

  • app.get("/", (req, res) => { res.send("serving working well!"); });: Defines a route for the root URL (/). When a GET request is made to /, the server responds with the plain text "serving working well!".

7. Starts the Server

  • app.listen(port, () => { console.log("listening to port : 8080"); });: Starts the server on port 8080 and logs a message to the console when the server is running.

Overall Purpose

This code creates a simple Express web server that:

  • Listens on port 8080.
  • Serves static files from a public directory (if the use of express.static is corrected).
  • Renders templates using the EJS engine (in the views directory).
  • Responds with a simple message on the root path /.
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