---
id: kb-2026-00059
title: Node.js
schema_type: TechArticle
category: computer-science
language: en
confidence: medium
last_verified: "2026-05-28"
created_date: "2026-05-22"
generation_method: human_only
ai_models:
  - claude-opus
derived_from_human_seed: true
conflict_of_interest: none_declared
is_live_document: false
data_period: static
atomic_facts:
  - id: fact-computer-science-nodejs-001
    statement: Node.js documentation describes Node.js as an open source, cross-platform JavaScript runtime environment.
    source_title: Introduction to Node.js | Node.js Learn
    source_url: https://nodejs.org/en/learn/getting-started/introduction-to-nodejs
    confidence: medium
  - id: fact-computer-science-nodejs-002
    statement: The Node.js introduction states that Node.js runs the V8 JavaScript engine outside the browser.
    source_title: Introduction to Node.js | Node.js Learn
    source_url: https://nodejs.org/en/learn/getting-started/introduction-to-nodejs
    confidence: medium
  - id: fact-computer-science-nodejs-003
    statement: >-
      The Node.js event loop documentation explains that the event loop enables non-blocking I/O operations while a
      single JavaScript thread is used by default.
    source_title: The Node.js Event Loop | Node.js Learn
    source_url: https://nodejs.org/en/learn/asynchronous-work/event-loop-timers-and-nexttick
    confidence: medium
completeness: 0.86
known_gaps:
  - This public sample was manually narrowed to source-backed facts on 2026-05-28.
disputed_statements: []
primary_sources:
  - title: Introduction to Node.js | Node.js Learn
    type: documentation
    year: 2026
    url: https://nodejs.org/en/learn/getting-started/introduction-to-nodejs
    institution: OpenJS Foundation
  - title: The Node.js Event Loop | Node.js Learn
    type: documentation
    year: 2026
    url: https://nodejs.org/en/learn/asynchronous-work/event-loop-timers-and-nexttick
    institution: OpenJS Foundation
  - title: Node.js API Documentation
    type: documentation
    year: 2026
    url: https://nodejs.org/api/
    institution: OpenJS Foundation
secondary_sources: []
updated: "2026-05-28"
---

## TL;DR

Node.js is an open source, cross-platform JavaScript runtime that runs V8 outside the browser. This repair removes dynamic stars, release-current claims, and vendor usage claims, keeping the article to stable Node.js documentation.

## Core Explanation

Node.js is designed around asynchronous, event-driven execution. Its event loop lets programs perform non-blocking I/O while JavaScript runs on a single thread by default, with work delegated to the system where possible.

## Further Reading

- [Introduction to Node.js | Node.js Learn](https://nodejs.org/en/learn/getting-started/introduction-to-nodejs)
- [The Node.js Event Loop | Node.js Learn](https://nodejs.org/en/learn/asynchronous-work/event-loop-timers-and-nexttick)
- [Node.js API Documentation](https://nodejs.org/api/)