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What are Promises in Node.js?

Promises represent the future result of an asynchronous operation. They have three states: pending, fulfilled, and rejected. Promises improve asynchronous code readability by allowing chaining with then(), catch(), and finally(). They are commonly used with modern Node.js APIs.

Related Drills

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

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What is Node.js and why is it used?

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What is the difference between Node.js and JavaScript?

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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.