Node.js® is a free, open-source, cross-platform JavaScript runtime environment that lets developers create servers, web apps, command line tools and scripts.

Node.js® is a free, open-source, cross-platform JavaScript runtime environment that lets developers create servers, web apps, command line tools and scripts.

Node.js® is a free, open-source, cross-platform JavaScript runtime environment that lets developers create servers, web apps, command line tools and scripts.

Node.js v25.6.1 Other versions 25.x 24.x LTS 23.x 22.x LTS 21.x 20.x LTS 19.x 18.x 17.x 16.x 15.x 14.x 13.x 12.x 11.x 10.x 9.x 8.x 7.x 6.x 5.x 4.x 0.12.x 0.10.x Options View on single page View as JSON …

An example of a web server written with Node.js which responds with 'Hello, World!': Commands in this document start with $ or > to replicate how they would appear in a user's terminal.

Node.js® is a free, open-source, cross-platform JavaScript runtime environment that lets developers create servers, web apps, command line tools and scripts.

The condition should be such that a Node.js user would expect it to be in Node.js core documentation. The "types" condition is a good example: It doesn't really belong in the Runtime Keys proposal but is …

Feb 10, 2026 · Node.js® is a free, open-source, cross-platform JavaScript runtime environment that lets developers create servers, web apps, command line tools and scripts.

The node:crypto module provides cryptographic functionality that includes a set of wrappers for OpenSSL's hash, HMAC, cipher, decipher, sign, and verify functions.

The node:fs module enables interacting with the file system in a way modeled on standard POSIX functions.