Promises

Lesson in the Node.js Roadmap · Stage 6: Command Line Apps

Last updated 14 September 2026

What is Promises?

A promise is an object representing the eventual result of an async operation. It can be in one of three states: pending, fulfilled, or rejected. Promises provide .then() and .catch() methods for chaining operations, and they are the foundation for async/await.

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Free resources to learn Promises

Promises: common questions

Can I learn Promises in Hindi?

This lesson is written in English. Once you sign in, open it in the interactive course and ask the AI tutor to explain Promises in Hindi or Hinglish. The tutor answers from this lesson’s own text, so it stays on the syllabus, and it runs on your own Google, OpenAI or Anthropic key.

Is this Promises tutorial for beginners?

It is lesson 31 of 113 in the free Node.js roadmap, in stage 6, Command Line Apps. If you are new to Node.js, start from stage 1 and come back here in order; if you already know the earlier stages, this lesson stands on its own.