Back to Node.js HubInterview Node.js

Nearby lessons

14 of 21
URL Module in Node.jsRouting in Node.jsPath Module in Node.jsModule Scope & Wrapper Function in Node.jsImporting JSON Files in Node.js

🛣️ Node.js – Path Module

📌 What is Path Module?

What is the Path Module?

The path module in Node.js is a core module that provides utilities for managing file and directory paths. It ensures platform independence and helps handle and transform paths across different operating systems.

The module includes methods for joining, resolving, normalizing paths, and other common file system tasks.

⚙️ Methods in Path Module

  • extname
  • join
  • normalize
  • basename
  • dirname
  • parse
  • resolve
  • isAbsolute

📌 Method Explanations

  • path.basename(): Gets the filename portion of a path.
  • path.extname(): Returns the extension of the file.
  • path.dirname(): Returns the directory name of the given path.
  • path.join(): Joins a number of path segments into one path.
  • path.resolve(): Resolves a sequence of paths into an absolute path.
  • path.normalize(): Normalizes a path, resolving . and .. segments.
  • path.parse(): Returns an object representing the path with properties: root, dir, base, ext, name.
  • path.isAbsolute(): Checks whether a path is absolute or relative.

📌 Absolute vs Relative Paths

  • Absolute Path: Contains the full details to locate a file. Example: D:\Tutorials\NodeJS\index.js
  • Relative Path: Does not contain full details. Example: NodeJS\index.js

🧩 Special Variables

  • __filename: Returns the filename of the currently executing code with absolute path.
  • __dirname: Returns the absolute path of the directory containing the currently executing file.

💻 Example Usage

Node.js Environment
RUNTIME ACTIVE
const path = require('path');

var filename = 'D:\\Tutorials\\NodeJS\\index.js';

console.log(path.basename(filename));
console.log(path.basename(__filename));
console.log(path.extname(filename));
console.log(path.dirname(filename));
console.log(path.join('users','category','diagrams','flowchart'));
console.log(path.join(__dirname,'users','category','diagrams','flowchart'));
console.log(path.resolve('users','category','diagrams','flowchart'));

var filename1 = 'D:\\Tutorials\\NodeJS\\index.js';
console.log(path.normalize(filename1));

var filename2 = 'D:\\Tutorials\\..\\NodeJS\\index.js';
console.log(path.normalize(filename2));

var filename3 = 'D:\\Tutorials\\NodeJS\\..\\index.js';
console.log(path.normalize(filename3));

console.log(path.join('users','category','diagrams','flowchart','..'));
console.log(path.join('users','category','diagrams','flowchart','..','..'));

console.log(path.parse(filename));
console.log(path.parse(filename).base);
console.log(path.parse(filename).ext);
console.log(path.parse(filename).root);
console.log(path.parse(filename).name);

console.log(path.isAbsolute(filename));
console.log(path.isAbsolute('NodeJS\\index.js'));
Terminal Output
Live Output Preview

🧠 Test Your Knowledge

4 Questions

Progress: 0 / 4
Keep Going!Module Scope & Wrapper Function in Node.js