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, very few of them act as a comprehensive guide to make use of promises. In this article, I will try to elaborate on promises in-depth, so you won't need to go through other resources.