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What is Node.js? - Definition & Meaning

Learn what Node.js is, how JavaScript runs on the server, and why it forms the basis for modern APIs and full-stack development.

Node.js is a JavaScript runtime built on Chrome’s V8 engine. It enables server-side development in JavaScript, allowing full-stack development with one language. Node.js is asynchronous and event-driven, ideal for I/O-intensive applications.

What is What is Node.js? - Definition & Meaning?

Node.js is a JavaScript runtime built on Chrome’s V8 engine. It enables server-side development in JavaScript, allowing full-stack development with one language. Node.js is asynchronous and event-driven, ideal for I/O-intensive applications.

How does What is Node.js? - Definition & Meaning work technically?

Event loop: non-blocking I/O, Promises. Package manager: npm/pnpm. Frameworks: Express, Fastify, NestJS. For REST/GraphQL APIs, WebSockets, serverless.

How does MG Software apply What is Node.js? - Definition & Meaning in practice?

MG Software builds backends with Node.js and TypeScript. Our REST APIs run on Express or Fastify, communicate with Supabase/PostgreSQL, and are deployed on PaaS or containers. Node.js fits well with our React/Next.js frontends.

What are some examples of What is Node.js? - Definition & Meaning?

  • A REST API built with Express performing CRUD operations on a PostgreSQL database.
  • A real-time collaboration app with Socket.io on Node.js for live updates.
  • A serverless function on Vercel processing webhooks and writing to a database.

Related terms

javascripttypescriptapirest apireact

Further reading

Knowledge BaseWhat is TypeScript? - Definition & MeaningWhat is Backend Development? - Definition & MeaningREST vs GraphQL: Which API Architecture Should You Choose?Node.js vs Python: Complete Comparison Guide

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Frequently asked questions

Limited. Node.js is single-threaded; heavy CPU tasks block the event loop. For CPU-intensive work: worker threads, child processes, or another language (e.g. Python, Go).
JavaScript is the language; Node.js is the runtime that executes JavaScript outside the browser. Node.js provides APIs for files, network, and processes that browsers do not have.
Fast development, large ecosystem (npm), async I/O for databases and external calls, and consistent language with the frontend. TypeScript adds type safety.

Is Node.js suitable for CPU-intensive tasks?

Limited. Node.js is single-threaded; heavy CPU tasks block the event loop. For CPU-intensive work: worker threads, child processes, or another language (e.g. Python, Go).

What is the difference between Node.js and JavaScript?

JavaScript is the language; Node.js is the runtime that executes JavaScript outside the browser. Node.js provides APIs for files, network, and processes that browsers do not have.

Why Node.js for APIs?

Fast development, large ecosystem (npm), async I/O for databases and external calls, and consistent language with the frontend. TypeScript adds type safety.

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What is Backend Development? - Definition & Meaning

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What is an API? - Definition & Meaning

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