Web Reference: Jul 12, 2025 · Making Promises: A Promise is created when we are unsure of whether or not the assigned task will be completed. The Promise object represents the eventual completion (or failure) of an async (asynchronous) operation and its resulting value. In this tutorial, you will learn about JavaScript promises and how to use them effectively in asynchronous programming. Sometimes, you may have to create your own promises as well. In this section you create a mock data service to familiarize yourself with the process of creating ECMAScript 6 promises.
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