Path Module and Path global constant

What is Path module?

In Node.js, the path module is a built-in core module that provides utilities for working with file and directory paths.

What is Global constant?

In Node.js, a global constant is a value that is always available in your code without requiring an import or declaration.

Example of both:

const path = require("path");

const file = "text/peter.txt";

console.log(path.extname(file)); // Output: .txt

console.log(path.dirname(file)); // Output: text

console.log(path.basename(file)); // Output: peter.txt

console.log(path.resolve("text", "peter.text")); // Output: absolute path to text/peter.text

console.log(path.isAbsolute(file)); // Output: false (if the path is not absolute)

This are the global constants in Node.js

console.log(__dirname); // Output: current directory path

console.log(__filename); // Output: current file path

Why do we need global constants?

This is very helpful when you're working with file systems (like reading HTML or CSS files), especially when your project is running on different machines or environments. It ensures your file paths are always accurate.