Node: Default objects and properties

README.md

Node: Default objects and properties

A number of default objects and properties come with the Node environment.

Terminology

__filename : The absolute file name of the current module.

__dirname : The directory of the current module.

process Global Object : A global object provides various information sets about the runtime of a program.

process.argv : An array containing the command-line arguments passed when the Node.js process was launched.

this : The infamous this keyword returns an empty object by default.

global : The Node global object replaces the window object in browsers.

script.js

// The file name of the current module
console.log(__filename);

// The directory of the current module
console.log(__dirname);

// An array containing the command-line arguments passed when the Node.js process was launched
console.log(process.argv);

// The infamous `this` keyword
console.log(this);

// The Node global object
console.log(global);