Promises
Promises
Section titled “Promises”Introduction
Section titled “Introduction”A Promise is an object representing the eventual completion or failure of an asynchronous operation. Promises solve callback hell by providing a chainable, flat structure.
Topics Covered
Section titled “Topics Covered”- Promise States — Pending, fulfilled, and rejected states
- Creating Promises — Using the Promise constructor
- Consuming Promises —
.then(),.catch(),.finally()
Learning Objectives
Section titled “Learning Objectives”- Understand the three states of a promise
- Create and consume promises
- Convert callback-based APIs to promises
Summary
Section titled “Summary”Promises represent async operations with three states: pending, fulfilled, rejected. They enable flat chaining and centralized error handling.