JavaScript Promises

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JavaScript Promises

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Last edited Apr 2, 2021

Created on Apr 2, 2021

This example demonstrates JavaScript Promise chains for handling asynchronous operations. It shows two scenarios: a primer where sequential API calls resolve and reject at different timeouts, and a currency conversion flow that fetches exchange rates from a simulated service before processing a card payment. The code uses native `Promise` objects, `setTimeout` for delays, and `.then()` callbacks to manage dependent operations. Data flows from mocked responses containing currency rates and payment statuses, with success and error paths logged to the console.

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