Sequential execution of Promises using reduce()

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Sequential execution of Promises using reduce()

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Last edited May 26, 2016

Created on Jun 22, 2018

This example demonstrates sequential execution of asynchronous Promise chains in JavaScript. It shows how the `reduce()` method orchestrates a collection of async tasks so each completes before the next begins, producing an ordered final result. The code uses native JavaScript Promises, the `Promise.resolve()` initializer, and `setTimeout()` to simulate time-based async work. The data source is the hardcoded array `[1, 2, 3]`, with each item’s delay proportional to its value. The rendering is purely console-based, logging each step and the final accumulated array via `console.log`.

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