Asynchronous JavaScript: From Callback Hell to Async and Await

One of the keys to writing a successful web application is being able to make dozens of AJAX calls per page.

This is a typical asynchronous programming challenge, and how you choose to deal with asynchronous calls will, in large part, make or break your app, and by extension potentially your entire startup.

Synchronizing asynchronous tasks in JavaScript was a serious issue for a very long time.

This challenge is affecting back-end developers using Node.js as much as front-end developers using any JavaScript framework. Asynchronous programming is a part of our everyday work, but the challenge is often taken lightly and not considered at the right time.

https://www.toptal.com/javascript/asynchronous-javascript-async-await-tutorial

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