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What is Node.js and why is it used?

Node.js is an open-source JavaScript runtime environment built on Google's V8 JavaScript engine. It allows developers to run JavaScript outside the browser and is commonly used for building scalable server-side applications, REST APIs, real-time applications, and microservices.

Related Drills

How would you handle global error boundaries in Express or Node.js backend apps?

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What is the difference between Node.js and JavaScript?

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What is npm in Node.js?

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JB

Jeevan Bhargav

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This answer is calibrated for technical interviews. Verify benchmarks in local sandboxes before deploying.