#callback hell

Promises in Javascript: A Complete Guide for 2019

via Promises in Javascript: A Complete Guide for 2019 — DZone Web Dev Zone Don’t let your program down! Promises are an important concept that is essential for a JavaScript developer to understand. If this concept is clear, the developer can utilize promises in a variety of ways in their day-to-day lives. There are a lot of articles and tutorials available on the web about promises. However,…

Unlike many other programming languages, JavaScript enables you to freely pass functions around to be executed at a later time. A callbackis a function that is passed as an argument to another function and is executed after its parent function has completed. Callbacks are special because they patiently wait to execute until their parent finishes. Meanwhile, the browser can be executing other…