Can you run browser JavaScript in Node.js?
Not directly. Browser JS uses DOM, window, fetch, localStorage which Node.js does not provide. You need polyfills (jsdom, node-fetch) or a browser-like environment (jsdom, Puppeteer) to run browser JS in Node.js.
Verify This Answer
Cross-check this information using these trusted sources:
More FAQs in The JavaScript Runtime Environment Explained
The engine (V8) plus the host-provided Web APIs, microtask and macrotask queues, and the event loop. The engine provides the call stack and heap; the host provides async APIs and the event loop.
No. The event loop is part of the host environment (browser or Node.js/libuv). The engine (V8) provides the call stack and heap. The host provides the event loop, Web APIs, and queues.
Because they have different host environments. The browser provides DOM, window, fetch, localStorage. Node.js provides fs, http, process, Buffer. Both use V8 as the engine, but the APIs and event loop differ.
Still have questions?
Browse all our FAQs or reach out to our support team