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JavaScript promises explained

Promises are one of the core features of JavaScript. What they are and how to use them? We answer those questions and provide code examples.

May 24, 2022·7 min read·blog.thecode.xyzRead the article

#javascript
#programming-blogs
#beginners

#web-development

#async

Written by

Tomek Skupiński

@focusinsky

View profile

Software Engineer, 1/3 of thecode.xyz

I’m Tomek, software engineer, working mostly with Ruby on Rails. I work remotely at Mixlr where every day we deliver live audio to millions of listeners. After hours, I write, read, and help my wife run theCode.xyz

Responses2

Markdown supported · ⌘↵ to post

Venu

May 28, 2022

Thanks for the article mate....

Miki Szeles

May 24, 2022

Great article, Tomek. 👏👏

I remember how confusing was when I first faced promises. Your article explains them well.

What are the usecases of already resolved or rejected promises?

Tomek Skupiński

May 24, 2022

That's a valid question. I haven't used them (still learning JS and treating these articles as a brain dump after each topic I go through). But the first idea that comes to my mind would be using them in tests whenever I wanna stub some async function. Do you think it would work?

Miki Szeles

Good question, I have no idea, Tomek Skupiński and I am too tired to google it. 🤣🤣🤣

May 24, 2022